{"title":"天然ルビー｜GIAレポート付きのルースもご用意","description":"\u003cp\u003eルビーはクロムによって発色したコランダムであり、\u003ca href=\"\/ja\/collections\/all-sapphire-gemstones\"\u003eサファイア\u003c\/a\u003eと同じ鉱物ですが、クロムの濃度が十分に高いため、深く鮮やかな赤色になっています。人類の歴史の中で何千年もの間、最も珍重されてきた宝石です。同等の品質で比較すると、上質なルビーは上質なダイヤモンドよりも希少です。GIA鑑別書付きで1ct以上のルビーをお探しの方は、\u003ca href=\"\/ja\/collections\/natural-ruby-over-1-carat-loose-stones-with-gia\"\u003eルビー1ct以上コレクション\u003c\/a\u003eをご覧ください。\u003c\/p\u003e\n\n\u003ch2\u003e当店のルビーが選ばれる理由\u003c\/h2\u003e\n\n\u003cp\u003e当店のルビーの取り扱いは小規模ですが、一点一点丁寧に厳選しています。ルビーは個別に一点ずつ掲載しており、パーセル売りや規格化された標準サイズは取り扱っておりません。全商品ページに処理状態を明記しており、上質な石には\u003cstrong\u003eGIAレポート\u003c\/strong\u003eが付属します。お決めになる前にその石そのものの見え方を確かめたい方は、\u003ca href=\"\/ja\/pages\/contact-crescent-gems-your-favorite-gem-store\"\u003eお問い合わせ\u003c\/a\u003eください。別の明かりのもとや別の角度から撮影した動画を、ご依頼に応じてお送りします。加熱処理がルビーの価値に与える影響についての詳細は、\u003ca href=\"\/ja\/pages\/heated-vs-unheated\"\u003e加熱・非加熱ガイド\u003c\/a\u003eをご覧ください。\u003c\/p\u003e\n\n\u003ch2\u003eこのコレクションのルビーの産地\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eビルマ（ミャンマー）\u003c\/strong\u003e — ルビーの基準となる産地で、「ピジョンブラッド」と呼ばれる、青みを帯びた蛍光を伴う鮮やかで純粋な赤を産出します。\u003cstrong\u003eモザンビーク\u003c\/strong\u003e — 現在では主要な商業産地であり、比較的低い産地プレミアムで同等の色を産出します。\u003cstrong\u003eセイロン（スリランカ）\u003c\/strong\u003e — やや明るいピンクレッドのルビーを産出し、非加熱のものが多いのが特徴です。産地が鑑別機関によってどのように検証され、価値にどう影響するかについては、\u003ca href=\"\/ja\/pages\/ceylon-sapphire-origin-guide\"\u003eセイロンサファイア産地ガイド\u003c\/a\u003eをご覧ください。\u003c\/p\u003e\n\n\u003ch2\u003eルビーとピンクサファイア—境界はどこにあるのか\u003c\/h2\u003e\n\n\u003cp\u003eルビーと\u003ca href=\"\/ja\/collections\/pink-sapphire-gemstones-unheated-ceylon-loose-stones\"\u003eピンクサファイア\u003c\/a\u003eはどちらもクロムによって発色した天然コランダムです。ルビーは十分な彩度を伴う支配的な赤色でなければなりません。ピンクサファイアはより低い彩度、またはより明確にピンクに寄った色相です。この境界は宝石鑑別機関が定義しており、GIAレポートには分類が明確に記載されます。この境界についてのコレクター向けの詳細な解説は、\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/blue-sapphire-engagement-ring-guide-what-every-buyer-should-know-before-purchasing\"\u003eサファイア購入ガイド\u003c\/a\u003eをご覧ください。\u003c\/p\u003e\n\n\u003ch2\u003e婚約指輪、コレクター、ジョーティッシュ向けのルビー\u003c\/h2\u003e\n\n\u003cp\u003eルビー（マニキャ）はジョーティッシュにおいて太陽に割り当てられた宝石です。詳細の仕様は\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/buying-sapphires-for-jyotish-vedic-astrology\"\u003eジョーティッシュ宝石ガイド\u003c\/a\u003eをご覧ください。婚約指輪をお探しの方には、ルビーのモース硬度9は日常使用に十分適しています。セッティングのアドバイスは\u003ca href=\"\/ja\/pages\/sapphire-engagement-ring-guide\"\u003eサファイア婚約指輪ガイド\u003c\/a\u003eをご覧ください。GIA鑑別書付きの投資向けルビーは\u003ca href=\"\/ja\/collections\/collectors-and-investment-gemstones\"\u003e投資向け宝石コレクション\u003c\/a\u003eをご覧ください。\u003c\/p\u003e\n\n\u003cp\u003eメールでのお問い合わせは\u003ca href=\"mailto:crescentgems@gmail.com\"\u003ecrescentgems@gmail.com\u003c\/a\u003eまで。14日間の返品保証。米国内送料無料。\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003e関連コレクション：\u003c\/em\u003e\u003ca href=\"\/ja\/collections\/natural-ruby-over-1-carat-loose-stones-with-gia\"\u003e\u003cem\u003eルビー1ct以上\u003c\/em\u003e\u003c\/a\u003e\u003cem\u003e ・ \u003c\/em\u003e\u003ca href=\"\/ja\/collections\/pink-sapphire-gemstones-unheated-ceylon-loose-stones\"\u003e\u003cem\u003eピンクサファイア\u003c\/em\u003e\u003c\/a\u003e\u003cem\u003e ・ \u003c\/em\u003e\u003ca href=\"\/ja\/collections\/collectors-and-investment-gemstones\"\u003e\u003cem\u003e投資向け宝石\u003c\/em\u003e\u003c\/a\u003e\u003cem\u003e ・ \u003c\/em\u003e\u003ca href=\"\/ja\/collections\/all-sapphire-gemstones\"\u003e\u003cem\u003eサファイア全体\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"0-52-ct-round-ruby-gemstone-heat-treated","title":"0.52 ct Natural Heated Ruby – Round Cut | Sri Lanka","description":"\u003cp\u003eA natural 0.52 carat ruby gemstone in a 4.60 mm round, modified round brilliant cut — a precision-faceted shape that maximizes the stone's natural radiance and fire. The expertly faceted surface captures and disperses light with remarkable precision, producing a vivid interplay of brilliance and scintillation. A refined choice for those seeking a high-quality natural ruby that combines aesthetic beauty with gemological integrity.\u003c\/p\u003e\n\n\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2 style=\"margin-top: 0; margin-bottom: 12px; color: #4a235a;\"\u003eExpert Opinion\u003c\/h2\u003e\n\u003cp style=\"font-weight: 600; margin-bottom: 6px;\"\u003e\u003ca href=\"\/ja\/pages\/ahmed-shareek-about-the-owner\" style=\"color: #4a235a; text-decoration: underline;\"\u003eAhmed Shareek\u003c\/a\u003e's Assessment\u003c\/p\u003e\n\u003cp style=\"font-style: italic; margin-bottom: 0;\"\u003e\"This 0.52 ct round ruby shows a vivid, saturated red typical of fine Sri Lankan material, with strong pleochroism between red and orangy-red that gives the stone visible depth as it moves under light.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eRarity Analysis\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eRuby is corundum colored by chromium, and fine, vividly saturated red material is a small share of overall corundum production compared with blue and other sapphire colors.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e This stone's Vivid Red, Intense-saturation color sits at the top of the ruby color range most buyers seek, rather than the lighter pinkish-red tones more common in commercial material.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e At 0.52 ct, this stone falls at the compact end of the ruby market; sub-carat rubies of clean, vivid color are more available than larger stones of comparable quality, though vivid true-red ruby of any size is not easy to source.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreatment:\u003c\/strong\u003e Heat treatment is the standard, expected enhancement for the great majority of ruby on the market — this stone's treatment status is typical, not exceptional.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClarity:\u003c\/strong\u003e Slightly Included — our own assessment, not a lab grade — consistent with natural ruby, which characteristically carries more inclusions than sapphire of comparable size due to its formation conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocumentation:\u003c\/strong\u003e An FGL lab report accompanies this stone; no report number is recorded in this stone's product data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombined effect:\u003c\/strong\u003e It is the combination of vivid, saturated red color with a clean round cut at this size — not color alone — that sets this stone apart; vivid-red ruby is consistently harder to source than lighter, commercial pinkish-red material.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eBuying Guidance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eA few practical points to weigh before purchasing this specific stone:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eView the stone in daylight and under warm indoor lighting —\u003c\/strong\u003e ruby's red can shift noticeably in tone between the two, and a vivid stone like this one should hold its saturation in both.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt 4.60mm round,\u003c\/strong\u003e this stone fits a standard round solitaire or halo head sized for a 0.50 ct diamond equivalent, without custom fabrication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhen comparison-shopping,\u003c\/strong\u003e confirm treatment status and lab source in writing — heat treatment is standard for ruby, but undisclosed treatments such as glass-filling or diffusion are common at the lower end of the market and should be ruled out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeigh the scarcity noted above,\u003c\/strong\u003e since vivid-red ruby at any carat weight is harder to source consistently than lighter pinkish-red material, regardless of this stone's compact size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse the Try Before You Buy option\u003c\/strong\u003e if you would like to see the stone in hand before finalizing the purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eLearn More About This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/ruby-buyers-guide\"\u003eRuby Buyer's Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/what-is-a-gia-sapphire-report-and-how-do-you-read-one\"\u003eGIA Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/how-to-commission-custom-sapphire-ring\"\u003eCustom Ring Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/sapphire-buying-guide\"\u003eGeneral Gemstone Buying Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/how-to-care-for-a-sapphire-engagement-ring-cleaning-storage-and-what-to-avoid\"\u003eHow to Care for a Corundum Engagement Ring\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/how-to-spot-fake-sapphire\"\u003eHow to Spot a Fake Gemstone\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2 style=\"margin-top: 0; margin-bottom: 14px; color: #4a235a;\"\u003eGemstone Data — At a Glance\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eItem #\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eCG8140\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eCarat Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e0.52 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eSpecies \/ Variety\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eRuby (Corundum)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eShape \/ Cut\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eRound, Modified Round Brilliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e4.60 x 4.60 x 3.11 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eColor \/ Intensity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eVivid Red (Intense saturation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003ePhenomenon\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eTreatment\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eHeat Treated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eSri Lanka (Ceylon)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eClarity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eSlightly Included (our own assessment, not a lab grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eTransparency\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eTransparent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eHardness\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e9 (Mohs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; font-weight: 600;\"\u003eCertification\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px;\"\u003eFGL — report number not listed in product data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\n\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Choose this 0.52 ct Round Natural Ruby\u003c\/strong\u003e\u003c\/span\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003e?\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\n\u003cp\u003eThis 0.52 ct natural ruby is more than just a gemstone — it's a statement of elegance, rarity, and authenticity. Whether you're designing a custom engagement ring or a meaningful pendant, this gemstone offers unmatched brilliance and natural charm.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Benefits of this Natural ruby gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimeless Investment\u003c\/strong\u003e\u003cbr\u003eNatural ruby gemstones retain value and are highly sought after worldwide.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Jewelry Use\u003c\/strong\u003e\u003cbr\u003eIdeal for rings, necklaces, earrings, or bespoke creations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRich Vivid Red Hue\u003c\/strong\u003e\u003cbr\u003eDeep, saturated color perfect for meaningful jewelry pieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSymbolic Meaning\u003c\/strong\u003e\u003cbr\u003eThe ruby, known as the \"king of gems,\" symbolizes intense passion, love, protection, and wealth.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eCarat Weight: 0.52 Carats\u003c\/li\u003e\n\u003cli\u003eGem Type: Natural Ruby\u003c\/li\u003e\n\u003cli\u003eCut: Round, Modified Round Brilliant\u003c\/li\u003e\n\u003cli\u003eDimensions: 4.60 × 4.60 × 3.11 mm\u003c\/li\u003e\n\u003cli\u003eOrigin: Sri Lanka\u003c\/li\u003e\n\u003cli\u003eTreatment: Heat treated\u003c\/li\u003e\n\u003cli\u003eColor: Vivid Red\u003c\/li\u003e\n\u003cli\u003eClarity: Slightly Included (our own assessment, not a lab grade)\u003c\/li\u003e\n\u003cli\u003eHardness: 9 on the Mohs scale\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis 0.52 ct natural ruby has been carefully selected to meet high gemological standards, ensuring quality, durability, and beauty.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Customers Love This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRare Natural Quality:\u003c\/strong\u003e Well-cut natural rubies are increasingly difficult to source at this quality level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrilliant Sparkle:\u003c\/strong\u003e Precision cutting enhances light reflection and fire.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfect for Custom Jewelry:\u003c\/strong\u003e A centerpiece that elevates any design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted Selection:\u003c\/strong\u003e Each stone is chosen for authenticity and excellence.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOwning this 0.52 ct natural ruby means investing in a gemstone that blends natural beauty with long-term value.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003ePerfect uses for this 0.52 ct Natural Ruby\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eEngagement rings\u003c\/li\u003e\n\u003cli\u003eAnniversary gifts\u003c\/li\u003e\n\u003cli\u003eCustom fine jewelry\u003c\/li\u003e\n\u003cli\u003eCollectors of natural gemstones\u003c\/li\u003e\n\u003cli\u003eAstrological or spiritual jewelry\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":42673261019203,"sku":"CG8140","price":900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/stone_CG8140_image-1.jpg?v=1778308013"},{"product_id":"1-carat-ruby-1-17-ct-natural-oval-gia-lab-report","title":"1.17 ct Natural Heated Ruby – Oval Cut | GIA Certified","description":"\u003cp\u003eA natural 1.17 carat ruby in an oval cut, heat treated, and documented on GIA Report #6233771189. Ruby is natural corundum colored by chromium — the same mineral species as sapphire, but with enough chromium that the color enters the red range rather than remaining pink. At 1.17 carats with GIA documentation, this is a well-specified example for engagement and collector use; GIA reports for ruby confirm weight, dimensions, and treatment status.\u003c\/p\u003e\n\n\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2 style=\"margin-top: 0; margin-bottom: 12px; color: #4a235a;\"\u003eExpert Opinion\u003c\/h2\u003e\n\u003cp style=\"font-weight: 600; margin-bottom: 6px;\"\u003e\u003ca href=\"\/ja\/pages\/ahmed-shareek-about-the-owner\" style=\"color: #4a235a; text-decoration: underline;\"\u003eAhmed Shareek\u003c\/a\u003e's Assessment\u003c\/p\u003e\n\u003cp style=\"font-style: italic; margin-bottom: 0;\"\u003e\"GIA documentation is what makes this stone worth trusting — it removes the ruby-vs-pink-sapphire-vs-spinel guesswork that plagues this category, and in my own assessment it's a genuinely eye-clean 1.17 ct ruby that clears the one-carat threshold serious buyers look for.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eRarity Analysis\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocumentation Is the Real Rarity Here.\u003c\/strong\u003e Ruby is the most commercially misrepresented colored gemstone — pink sapphire, red spinel, and glass-filled composites are routinely sold as ruby without proof. GIA Report #6233771189 is what actually sets this stone apart, not extreme physical rarity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEye-Clean Clarity, Uncommon in Ruby.\u003c\/strong\u003e Ruby typically forms with heavy silk and fracturing, so eye-clean material at any size is genuinely harder to find in ruby than in most other colored gemstones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Treatment Is Standard, Not a Rarity Factor.\u003c\/strong\u003e The vast majority of commercial ruby is heat-treated — this stone's treatment is fully disclosed rather than concealed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbove the 1-Carat Threshold.\u003c\/strong\u003e At 1.17 carats, this stone crosses the size point most dealers and collectors treat as the baseline for serious, GIA-documented ruby consideration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut Quality Adds to the Value Story.\u003c\/strong\u003e The mixed cut (brilliant crown, step pavilion) is a deliberate choice that maximizes sparkle and color return — not a given in commercial ruby cutting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombined value:\u003c\/strong\u003e this is an accessible-tier ruby whose real distinction is verifiable honesty — a GIA-documented species, weight, and treatment status, paired with clarity and cut quality above the ordinary for ruby at this price point.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eBuying Guidance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify species first.\u003c\/strong\u003e Ruby is confused — accidentally and deliberately — with pink sapphire, red spinel, and glass or composite imitations more than almost any other colored gemstone. A GIA report, like #6233771189 on this stone, is the single most important thing to check before buying ruby.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpect heat treatment, and expect disclosure.\u003c\/strong\u003e Virtually all commercial ruby is heat-treated to improve color and clarity — this is the accepted industry norm, not a flaw — but any reputable seller states it plainly, as this listing does.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeigh clarity carefully.\u003c\/strong\u003e Ruby typically forms with dense silk and fracturing, so eye-clean clarity — like this stone's — is harder to source in ruby than in most other colored gemstones at a comparable price.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-check the lab report against the listing.\u003c\/strong\u003e Confirm that the weight, dimensions, and treatment status quoted match the GIA report number exactly, so there's no gap between what's described and what arrives.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTry Before You Buy:\u003c\/strong\u003e Request additional photos or video of this exact stone, and buy from a seller offering a real return window so you can evaluate the ruby's color and clarity in your own lighting before committing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eLearn More About This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/ruby-buyers-guide\"\u003eRuby — The Complete Buyer's Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/what-is-a-gia-sapphire-report-and-how-do-you-read-one\"\u003eHow to Read a GIA Lab Report\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/how-to-commission-custom-sapphire-ring\"\u003eCommissioning a Custom Ring for Your Loose Stone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/the-smart-way-to-buy-loose-gemstones-online-in-2026\"\u003eThe Smart Way to Buy Loose Gemstones Online in 2026\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/sapphire-vs-spinel-collectors-guide\"\u003eSapphire vs. Spinel — Why Red Corundum and Spinel Get Confused\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2 style=\"margin-top: 0; margin-bottom: 14px; color: #4a235a;\"\u003eGemstone Data — At a Glance\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eItem #\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eCG8250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eCarat Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e1.17 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eSpecies \/ Variety\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNatural Ruby (Corundum)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eShape \/ Cut\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eOval, Mixed Cut (Brilliant Crown \/ Step Pavilion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e7.46 × 4.95 × 3.77 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eColor \/ Intensity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003ePhenomenon\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eTreatment\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eHeat Treated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eClarity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eEye-clean — our own assessment; GIA colored-stone reports carry no clarity grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eTransparency\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eTransparent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eHardness\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e9 (Mohs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; font-weight: 600;\"\u003eCertification\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px;\"\u003eGIA Report #6233771189\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Choose this 1.17 ct GIA Oval Ruby?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eThe GIA report (#6233771189) on this stone provides the independent documentation that distinguishes a verified ruby from a claim. Ruby is the most commercially misrepresented colored gemstone — pink sapphires, red spinels, and low-quality material are routinely sold as ruby without documentation. This GIA report resolves the ambiguity: it confirms the material is natural corundum of ruby (red) color, weight, and dimensions, with treatment status stated explicitly.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Benefits of this Natural Ruby\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIA-Documented Ruby\u003c\/strong\u003e\u003cbr\u003eIndependent confirmation of species, weight, dimensions, and treatment status (Report #6233771189).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Treated to Standard\u003c\/strong\u003e\u003cbr\u003eStandard industry heat treatment — the accepted commercial norm for ruby, fully disclosed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMixed Cut Precision\u003c\/strong\u003e\u003cbr\u003eA brilliant crown paired with a step-cut pavilion delivers sparkle up top and clean color display through the body of the stone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbove-1-Carat Size\u003c\/strong\u003e\u003cbr\u003eGIA-documented ruby above 1 carat is the minimum threshold for investment-grade consideration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable for Daily Wear\u003c\/strong\u003e\u003cbr\u003eCorundum at Mohs 9, second only to diamond.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVariety: Ruby\u003c\/li\u003e\n\u003cli\u003eCarat Weight: 1.17 Carats\u003c\/li\u003e\n\u003cli\u003eDimensions: 7.46 x 4.95 x 3.77 mm\u003c\/li\u003e\n\u003cli\u003eShape: Oval\u003c\/li\u003e\n\u003cli\u003eCut Style: Mixed Cut (Brilliant Crown \/ Step Pavilion)\u003c\/li\u003e\n\u003cli\u003eTreatment: Heat Treated\u003c\/li\u003e\n\u003cli\u003eColor: Red\u003c\/li\u003e\n\u003cli\u003eClarity: Eye-clean — no visible inclusions under normal viewing — our own assessment, not a GIA grade\u003c\/li\u003e\n\u003cli\u003eCertification: GIA Report #6233771189\u003c\/li\u003e\n\u003cli\u003eHardness: 9 on the Mohs scale\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis 1.17 ct GIA oval ruby has been hand-selected for the richness of its red and the quality of its cut — the combination that determines performance in finished ruby jewelry.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eOne of a Kind\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eThis is a single natural gemstone, not a manufactured or mass-produced item — no two rubies are exactly alike, and once this stone sells, this particular listing will not be restocked.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eCare of Oval Ruby\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eRuby is durable (Mohs 9) but should still be cared for thoughtfully. Clean with warm water, mild soap, and a soft brush; avoid ultrasonic or steam cleaners if the stone has any fractures typical of heat-treated material. Store separately from other jewelry to prevent surface scratches, and remove the stone before activities involving harsh chemicals or impact.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Customers Love This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIA Documentation:\u003c\/strong\u003e The verification that removes ambiguity about species, quality, and treatment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbove-1-Carat:\u003c\/strong\u003e The minimum threshold for GIA-documented ruby investment consideration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRich Red:\u003c\/strong\u003e The color most associated with fine ruby — warm, vivid, and immediately recognizable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted Source:\u003c\/strong\u003e Every attribute documented, treatment disclosed honestly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOwning this 1.17 ct GIA ruby means investing in a documented stone — every significant attribute except clarity confirmed by the world's most recognized gem laboratory (Report #6233771189); the clarity is our own assessment.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003ePerfect Uses for this 1.17 ct Ruby\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eEngagement ring center stone\u003c\/li\u003e\n\u003cli\u003eStatement pendant or cocktail ring\u003c\/li\u003e\n\u003cli\u003eCollectors of GIA-documented natural ruby\u003c\/li\u003e\n\u003cli\u003eJuly birthstone gift\u003c\/li\u003e\n\u003cli\u003eAnniversary or romantic milestone gift\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":42700447219779,"sku":"CG8250","price":3600.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/1112023001_f8973359-0a50-4a18-861a-96ae8b0c08c9.jpg?v=1778308014"},{"product_id":"1-83-ct-cushion-shaped-natural-ruby-untreated-gia","title":"1.83 ct Natural Unheated Ruby – Cushion Cut | GIA Certified","description":"\u003cp\u003eA natural 1.83 ct cushion-cut ruby, completely untreated, documented on GIA Ruby Origin Report #6233835340, confirming Madagascar origin and no indications of heating. Untreated ruby — corundum that has never been heated — is among the most rare and collectible gemstones available in the loose stone market. Heat treatment is standard practice for virtually all commercial ruby (some estimates place this above 95% of the market), so a GIA-documented untreated ruby above 1 carat represents a genuinely exceptional find. The cushion cut at 1.83 carats produces strong face-up color in the purplish red range that fine ruby is prized for.\u003c\/p\u003e\n\n\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2 style=\"margin-top: 0; margin-bottom: 12px; color: #4a235a;\"\u003eExpert Opinion\u003c\/h2\u003e\n\u003cp style=\"font-weight: 600; margin-bottom: 6px;\"\u003e\u003ca href=\"\/ja\/pages\/ahmed-shareek-about-the-owner\" style=\"color: #4a235a; text-decoration: underline;\"\u003eAhmed Shareek\u003c\/a\u003e's Assessment\u003c\/p\u003e\n\u003cp style=\"font-style: italic; margin-bottom: 0;\"\u003e\"With heat treatment standard on over 95% of commercial ruby, a genuinely untreated stone above 1.5 carats is one of the rarest things I get to offer — and having GIA confirm both the untreated status and the Madagascar origin on one report is a level of documentation most untreated rubies in the trade simply don't carry.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eRarity Analysis\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUntreated status:\u003c\/strong\u003e Well over 95% of commercial ruby on the market today is heat-treated to improve color and clarity. A stone with no indications of heating at all — confirmed by GIA rather than claimed by a seller — sits in a small minority of world ruby production.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIA Ruby Origin Report:\u003c\/strong\u003e Report #6233835340 is a Ruby Origin Report, meaning GIA independently confirmed species, weight, dimensions, treatment status, AND Madagascar origin in a single document. That dual confirmation — treatment and origin together — is a meaningfully higher bar than an undocumented \"natural, Madagascar\" claim.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbove-1.5-carat size:\u003c\/strong\u003e Untreated ruby becomes progressively harder to find as size increases, since larger untreated rough is rarer and more likely to be heat-treated to maximize yield and color. At 1.83 carats, this stone clears a size threshold where untreated material is genuinely scarce.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurplish red color:\u003c\/strong\u003e This hue falls within the color range most associated with fine ruby, and the mixed cut (modified brilliant crown \/ step pavilion) is built to concentrate that saturation across the face-up view.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonest clarity note:\u003c\/strong\u003e In our own assessment this stone has inclusions visible under 10× rather than being flawless — a completely normal and expected clarity level for natural, untreated ruby of this size. Untreated rubies typically retain more of their natural inclusions than treated stones, since heating is often used partly to reduce the visibility of inclusions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombined effect:\u003c\/strong\u003e Untreated status, GIA-confirmed Madagascar origin, and above-1.5-carat weight rarely appear together on a single stone. Individually each factor narrows the field; together, they place this ruby in a genuinely rare category within the natural colored stone market.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eBuying Guidance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify untreated status on paper, not on faith:\u003c\/strong\u003e Because heat treatment is standard practice for the overwhelming majority of commercial ruby, \"untreated\" is a claim that needs independent laboratory confirmation. Take any untreated claim seriously only when it is backed by a report from a major lab like GIA — as it is here.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin documentation is a higher bar than an origin claim:\u003c\/strong\u003e A GIA Origin Report confirming Madagascar carries far more weight than a seller simply stating \"Madagascar origin\" with no laboratory backing. Ask to see the report, and confirm the report number matches the stone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderstand what clarity level to expect:\u003c\/strong\u003e Untreated ruby, especially in larger sizes, will typically show more visible inclusions than heat-treated material of similar size. Inclusions visible under 10× — our own assessment, not a GIA grade — are normal on an untreated stone and should not be read as a flaw relative to the category.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCare benefits of untreated ruby:\u003c\/strong\u003e Because this stone has never been heated or filled, it can be safely cleaned with an ultrasonic or steam cleaner — an option not recommended for many treated or glass-filled rubies, where heat or vibration can damage the filler material.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTry Before You Buy:\u003c\/strong\u003e Request additional photos or a video call to view the stone's color and clarity in person before purchasing, and confirm return policy terms so you can evaluate the stone hands-on with confidence.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eLearn More About This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/ruby-buyers-guide\"\u003eRuby — The Complete Buyer's Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/what-is-a-gia-sapphire-report-and-how-do-you-read-one\"\u003eHow to Read a GIA Lab Report\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/how-to-commission-custom-sapphire-ring\"\u003eCustom Ring Settings for Loose Gemstones\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/the-smart-way-to-buy-loose-gemstones-online-in-2026\"\u003eThe Smart Way to Buy Loose Gemstones Online\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2 style=\"margin-top: 0; margin-bottom: 14px; color: #4a235a;\"\u003eGemstone Data — At a Glance\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eItem #\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eCG8338\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eCarat Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e1.83 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eSpecies \/ Variety\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNatural Ruby (Corundum)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eShape \/ Cut\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eCushion, Mixed Cut (Modified Brilliant Crown \/ Step Pavilion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e6.62 × 6.19 × 5.03 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eColor \/ Intensity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003ePurplish Red\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003ePhenomenon\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eTreatment\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eUntreated — GIA confirmed (no indications of heating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eMadagascar (GIA determined)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eClarity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eInclusions visible under 10× — our own assessment; GIA colored-stone reports carry no clarity grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eTransparency\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eTransparent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eHardness\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e9 (Mohs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; font-weight: 600;\"\u003eCertification\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px;\"\u003eGIA Report #6233835340\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Choose this 1.83 ct Cushion Untreated Ruby?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eThe combination of three factors — untreated status, GIA documentation (Report #6233835340), and above-1.5-carat size — places this stone in the upper tier of natural ruby collecting. Untreated status means the color is entirely natural: no furnace, no glass filling, no enhancement of any kind. The GIA report confirms this independently, along with a Madagascar origin determination. At 1.83 carats, the stone has the weight for a dominant center stone in ring or pendant settings, and the cushion cut deepens the purplish red across the face-up surface.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Benefits of this Natural Ruby\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUntreated — GIA Confirmed\u003c\/strong\u003e\u003cbr\u003eNo heat treatment, no glass filling, no enhancement. Documented as untreated on GIA Report #6233835340 — the most authoritative confirmation available.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional Rarity\u003c\/strong\u003e\u003cbr\u003eGIA-documented untreated ruby above 1.5 carats is among the most sought-after colored gemstones in trade.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.83-Carat Center Stone Size\u003c\/strong\u003e\u003cbr\u003eLarge enough for a dominant presence in any engagement ring, cocktail ring, or pendant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMixed Cut Craftsmanship\u003c\/strong\u003e\u003cbr\u003eA modified brilliant crown paired with a step-cut pavilion concentrates the deep purplish red saturation across the face-up surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable for Daily Wear\u003c\/strong\u003e\u003cbr\u003eCorundum at Mohs 9, second only to diamond.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVariety: Ruby\u003c\/li\u003e\n\u003cli\u003eCarat Weight: 1.83 Carats\u003c\/li\u003e\n\u003cli\u003eDimensions: 6.62 x 6.19 x 5.03 mm\u003c\/li\u003e\n\u003cli\u003eShape: Cushion\u003c\/li\u003e\n\u003cli\u003eCut Style: Mixed Cut (Modified Brilliant Crown \/ Step Pavilion)\u003c\/li\u003e\n\u003cli\u003eTreatment: Untreated — GIA confirmed (no indications of heating)\u003c\/li\u003e\n\u003cli\u003eColor: Purplish Red\u003c\/li\u003e\n\u003cli\u003eOrigin: Madagascar (GIA determined)\u003c\/li\u003e\n\u003cli\u003eClarity: Inclusions visible under 10× — our own assessment, not a GIA grade\u003c\/li\u003e\n\u003cli\u003eCertification: GIA Report #6233835340\u003c\/li\u003e\n\u003cli\u003eHardness: 9 on the Mohs scale\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis 1.83 ct cushion untreated ruby has been hand-selected as an exceptional specimen — GIA-confirmed untreated ruby of this size and origin is the combination that defines the finest tier of natural ruby collecting.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eOne of a Kind\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eThis is a single natural gemstone, not a manufactured or mass-produced item — no two rubies are exactly alike, and once this stone sells, this particular listing will not be restocked.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eCare of Cushion Ruby\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eRuby is durable (Mohs 9) but should still be cared for thoughtfully. Clean with warm water, mild soap, and a soft brush; since this stone is untreated and unfilled, it can safely be cleaned with an ultrasonic or steam cleaner if needed, unlike many treated rubies. Store separately from other jewelry to prevent surface scratches, and remove the stone before activities involving harsh chemicals or impact.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Customers Love This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIA Untreated Confirmation:\u003c\/strong\u003e The most authoritative verification in the gemstone world — no treatment, no exception.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Rarity:\u003c\/strong\u003e Untreated ruby above 1.5 carats is one of the rarest gem categories available commercially.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInvestment Grade:\u003c\/strong\u003e Untreated, GIA-documented, above 1.5 carats — the specification that defines collector-level ruby.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted Source:\u003c\/strong\u003e Every claim independently confirmed apart from clarity, which is our own assessment; nothing undisclosed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOwning this 1.83 ct untreated GIA cushion ruby means acquiring one of the genuinely rare gemstones in the colored stone market — a stone whose natural color and Madagascar origin are confirmed by the world's most recognized laboratory (Report #6233835340).\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003ePerfect Uses for this 1.83 ct Untreated Ruby\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eInvestment-grade gemstone collection\u003c\/li\u003e\n\u003cli\u003eStatement engagement ring center stone\u003c\/li\u003e\n\u003cli\u003eCollectors of GIA-documented untreated ruby\u003c\/li\u003e\n\u003cli\u003eHeirloom-quality custom commission\u003c\/li\u003e\n\u003cli\u003eSignificant anniversary or milestone gift\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":42701345947715,"sku":"CG8338","price":3700.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/1112023001_605e32fa-94a6-4628-bef2-71ed6b4b179e.jpg?v=1778308024"},{"product_id":"1-carat-ruby-1-09-ct-emerald-cut-natural-gia-report","title":"1.09 ct Natural Heated Ruby – Emerald Cut | GIA Certified","description":"\u003cp\u003eA natural 1.09 carat ruby in an emerald cut, heat treated, documented on a GIA Ruby Origin Report (#5232922092) confirming Madagascar origin. Emerald-cut ruby is one of the rarest combinations in fine colored gemstones — the step-cut format demands better clarity than brilliant cuts (since step facets cannot mask inclusions the way brilliant faceting does), and ruby typically carries heavy inclusions. A GIA-reported emerald-cut ruby with eye-clean clarity (our own assessment) represents a deliberate selection for both cut quality and material quality simultaneously.\u003c\/p\u003e\n\n\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2 style=\"margin-top: 0; margin-bottom: 12px; color: #4a235a;\"\u003eExpert Opinion\u003c\/h2\u003e\n\u003cp style=\"font-weight: 600; margin-bottom: 6px;\"\u003e\u003ca href=\"\/ja\/pages\/ahmed-shareek-about-the-owner\" style=\"color: #4a235a; text-decoration: underline;\"\u003eAhmed Shareek\u003c\/a\u003e's Assessment\u003c\/p\u003e\n\u003cp style=\"font-style: italic; margin-bottom: 0;\"\u003e\"An eye-clean emerald-cut ruby is not something I come across often — step facets expose every inclusion, and most ruby simply isn't clean enough to survive that kind of cut. Pair that clarity with a GIA-confirmed Madagascar origin and honestly disclosed heat treatment, and this stone is a genuinely well-documented, deliberate selection rather than a lucky find.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eRarity Analysis\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut-Clarity Combination:\u003c\/strong\u003e Emerald (step) cuts demand better clarity than brilliant cuts because their broad, flat facets can't mask inclusions the way brilliant faceting does — and ruby typically carries heavy inclusions. An eye-clean emerald-cut ruby means the material was clean enough, before cutting, to survive the least forgiving format in colored stones. That is a deliberate, uncommon selection, not a common one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIA Origin Report — Dual Confirmation:\u003c\/strong\u003e The GIA report doesn't just confirm species (resolving the ambiguity that makes ruby the most commonly misrepresented gemstone) — it independently determines Madagascar origin, giving this stone two layers of laboratory-backed confirmation most rubies on the market never receive.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e A pinkish red hue in the classic range collectors associate with fine Madagascar ruby.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat Rarity:\u003c\/strong\u003e The overwhelming majority of fine ruby on the market is cut oval or cushion to maximize brilliance and forgive inclusions. An emerald-cut ruby is a minority format precisely because so little rough ruby is clean enough to justify it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreatment — Standard, Not a Rarity Factor:\u003c\/strong\u003e This stone is heat treated, the accepted, disclosed, industry-standard treatment for the vast majority of commercial ruby. It is not being marketed as untreated, and heat treatment should not be read as a rarity claim here — the rarity in this stone comes from the cut-clarity combination and the origin documentation, not the treatment status.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombined effect:\u003c\/strong\u003e A GIA-documented, Madagascar-origin, eye-clean emerald-cut ruby brings together a clarity level, a cut format, and a level of independent verification that rarely appear on the same stone at once.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eBuying Guidance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClarity matters more in step cuts:\u003c\/strong\u003e Emerald and other step cuts have no brilliant faceting to scatter light and hide inclusions — what you see through the table is what you get. Insist on eye-clean or better in any emerald-cut ruby, and be skeptical of listings that don't address clarity directly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify species with a lab report:\u003c\/strong\u003e Ruby is one of the most frequently misrepresented gemstones — confused with, or substituted by, red spinel, garnet, glass-filled composites, and synthetics. A GIA report confirming natural ruby species is the baseline requirement, not an optional extra.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm treatment disclosure:\u003c\/strong\u003e Heat treatment is standard and acceptable for the great majority of ruby on the market — this stone's is disclosed. What buyers should watch for is undisclosed additional treatment (such as lead-glass or cavity filling), which a proper lab report will also address.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtect the corners in the setting:\u003c\/strong\u003e An emerald cut's pointed corners are more vulnerable to chipping than a rounded shape, as this listing's own care guidance notes. Choose a protective setting — prongs positioned over the corners, or a bezel\/halo — rather than an exposed mounting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTry Before You Buy:\u003c\/strong\u003e Request additional photos or video under different lighting, ask for the full GIA report, and buy from a seller whose return policy lets you evaluate the stone in hand before committing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eLearn More About This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/ruby-buyers-guide\"\u003eRuby — The Complete Buyer's Guide to the World's Most Valuable Colored Gemstone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/what-is-a-gia-sapphire-report-and-how-do-you-read-one\"\u003eWhat Is a GIA Report and How Do You Read One?\u003c\/a\u003e (covers how to read GIA lab reports generally)\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/how-to-commission-custom-sapphire-ring\"\u003eCustom Rings — The Complete Guide to Designing Your Own\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja\/blogs\/information-pages-complete-guide\/the-smart-way-to-buy-loose-gemstones-online-in-2026\"\u003eBuy Loose Gemstones the Smart Way in 2026\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2 style=\"margin-top: 0; margin-bottom: 14px; color: #4a235a;\"\u003eGemstone Data — At a Glance\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eItem #\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eCG8407\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eCarat Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e1.09 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eSpecies \/ Variety\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNatural Ruby (Corundum)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eShape \/ Cut\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eEmerald Cut (Octagonal), Step Cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e7.43 × 5.16 × 2.69 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eColor \/ Intensity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003ePinkish Red\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003ePhenomenon\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eTreatment\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eHeat Treated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eMadagascar (GIA determined)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eClarity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eEye-clean — our own assessment; GIA colored-stone reports carry no clarity grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eTransparency\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eTransparent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eHardness\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e9 (Mohs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; font-weight: 600;\"\u003eCertification\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px;\"\u003eGIA Report #5232922092\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Choose this 1.09 ct GIA Emerald-Cut Ruby?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eThe GIA report (#5232922092) confirms the stone is natural ruby — the verification that resolves the species ambiguity that makes ruby the most commonly misrepresented gemstone — and independently determines a Madagascar origin. The emerald cut creates an architectural, art deco look that distinguishes this stone from the oval and cushion rubies that dominate the market, and the step facets reveal the stone's color depth in a way that brilliant cuts do not.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Benefits of this Natural Ruby\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIA-Documented Ruby\u003c\/strong\u003e\u003cbr\u003eIndependent confirmation of species, weight, dimensions, origin, and treatment status (Report #5232922092).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmerald Cut Distinction\u003c\/strong\u003e\u003cbr\u003eArchitectural step-cut ruby — the format that most clearly differentiates this stone from the oval-cushion majority.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep-Cut Clarity Requirement Met\u003c\/strong\u003e\u003cbr\u003eEye-clean clarity in ruby is exceptional — step facets reveal everything, making this clarity level meaningful.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbove-1-Carat Center Stone\u003c\/strong\u003e\u003cbr\u003e1.09 carats — a practical center stone weight in the most desirable red gemstone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable for Daily Wear\u003c\/strong\u003e\u003cbr\u003eCorundum at Mohs 9, second only to diamond.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVariety: Ruby\u003c\/li\u003e\n\u003cli\u003eCarat Weight: 1.09 Carats\u003c\/li\u003e\n\u003cli\u003eDimensions: 7.43 x 5.16 x 2.69 mm\u003c\/li\u003e\n\u003cli\u003eShape: Emerald Cut (Octagonal)\u003c\/li\u003e\n\u003cli\u003eCut Style: Step Cut\u003c\/li\u003e\n\u003cli\u003eTreatment: Heat Treated\u003c\/li\u003e\n\u003cli\u003eColor: Pinkish Red\u003c\/li\u003e\n\u003cli\u003eOrigin: Madagascar (GIA determined)\u003c\/li\u003e\n\u003cli\u003eClarity: Eye-clean — no visible inclusions under normal viewing — our own assessment, not a GIA grade\u003c\/li\u003e\n\u003cli\u003eCertification: GIA Report #5232922092\u003c\/li\u003e\n\u003cli\u003eHardness: 9 on the Mohs scale\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis 1.09 ct GIA emerald-cut ruby has been hand-selected for the quality of its color and the clarity that the emerald cut demands — a genuinely uncommon combination in natural ruby.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eOne of a Kind\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eThis is a single natural gemstone, not a manufactured or mass-produced item — no two rubies are exactly alike, and once this stone sells, this particular listing will not be restocked.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eCare of Emerald-Cut Ruby\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eRuby is durable (Mohs 9) but should still be cared for thoughtfully. Clean with warm water, mild soap, and a soft brush; avoid ultrasonic or steam cleaners, since heat-treated ruby can carry residual fractures that these methods may stress. Store separately from other jewelry to prevent surface scratches, and remove the stone before activities involving harsh chemicals or impact — the pointed corners of an emerald cut are also more prone to chipping, so extra care around hard knocks is worthwhile.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Customers Love This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIA Documentation:\u003c\/strong\u003e Species, origin, quality, and treatment confirmed independently.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmerald Cut Rarity:\u003c\/strong\u003e Step-cut ruby at this clarity is genuinely uncommon.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArt Deco Appeal:\u003c\/strong\u003e The architectural step format in the most historically significant colored gemstone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted Source:\u003c\/strong\u003e Every attribute documented, treatment disclosed honestly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOwning this 1.09 ct GIA emerald-cut ruby means choosing the most architecturally distinctive format in the most historically prized colored gemstone — with independent documentation, including a Madagascar origin determination, to confirm it (Report #5232922092).\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003ePerfect Uses for this 1.09 ct Emerald-Cut Ruby\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eArt deco or architectural engagement ring\u003c\/li\u003e\n\u003cli\u003eStatement pendant center stone\u003c\/li\u003e\n\u003cli\u003eCollectors of unusual-cut GIA-documented rubies\u003c\/li\u003e\n\u003cli\u003eJuly birthstone fine jewelry commission\u003c\/li\u003e\n\u003cli\u003eSignificant anniversary or romantic gift\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":43022352318531,"sku":"CG8407","price":3270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/1112023001_36c3fdf3-7a0d-4f02-929c-401f89728ec3.jpg?v=1777536660"},{"product_id":"1-65-ct-oval-ruby-unheated-madagascar-gia","title":"1.65ct 非加熱ルビーのルース｜マダガスカル産ルビー・オーバル・GIA原産地レポート付き","description":"\u003cp\u003e1.65ctの天然ルビー、オーバルのルースです。GIAカラーストーン鑑別及び原産地レポート（No.2245032085／2026年8月17日発行）の追加結果（Additional Results）欄には、「加熱の痕跡は認められない（No Indications of Heating）」と記載されています。ルビーはサファイアと同じコランダムで、クロムを含む量が多く、色がピンクにとどまらず赤の領域に入ったものを指します。ルビーの流通において加熱処理は一般的に行われており、1カラットを超える非加熱の石にGIAの原産地レポートが伴う例は、当店の仕入れでも多くはありません。レポートには重量、寸法、色、カットスタイルが記録され、産地についてはマダガスカルとするGIAの意見が示されています。\u003c\/p\u003e\n\n\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2 style=\"margin-top: 0; margin-bottom: 12px; color: #4a235a;\"\u003e専門家の見解\u003c\/h2\u003e\n\u003cp style=\"font-weight: 600; margin-bottom: 6px;\"\u003e\u003ca href=\"\/ja\/pages\/ahmed-shareek-about-the-owner\" style=\"color: #4a235a; text-decoration: underline;\"\u003eAhmed Shareek\u003c\/a\u003eによる評価\u003c\/p\u003e\n\u003cp style=\"font-style: italic; margin-bottom: 0;\"\u003e「ルビーを選ぶとき、いちばん確かめにくいのが加熱の有無です。この石は1.65カラットのオーバルで、GIAのレポートがあり、追加結果欄に加熱の痕跡は認められないと記載されています。ルビーの流通では加熱を経るのが通例ですから、その記載を確かめたうえで、店に置いておきたい石だと判断して仕入れました。コレクションに一石加えるのであれば、何を買ったのかがはっきりしている買い物になると思います。」\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003e希少性について\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eこの石を特徴づけているのは、次の五つが重なっている点です。\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e非加熱であること：\u003c\/strong\u003e色や見た目のクラリティを整えるための加熱処理は、ルビーの流通において一般的に行われています。なお、「非加熱」は「無処理」とは異なります。GIAの記載は加熱についての所見であり、当店はこの石について「無処理」とは書きません。\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e重量との組み合わせ：\u003c\/strong\u003e1.65ctという重量そのものを希少と申し上げるつもりはありません。ただ、非加熱であることとGIAの原産地レポートとが揃った状態でこの大きさに出会う機会は、そう多くはありません。\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIAのレポートがあること：\u003c\/strong\u003e「加熱の痕跡は認められない」という記載があることで、書類に裏づけられた非加熱と、売り手が述べるだけの非加熱とが分かれます。この所見は当店のものではなく、ラボのものです。\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eマダガスカル産：\u003c\/strong\u003eマダガスカルは、近年のルビーの供給地として一定の認知を得た産地です。GIAが原産地の意見を示す対象として扱っており、本品については観察と分析データに基づきマダガスカルとの意見が記載されています。\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eクラリティ：\u003c\/strong\u003e肉眼で内包物は確認できません。これは当店による観察であり、GIAの評価ではありません。GIAのカラーストーンレポートにクラリティグレードの記載はありません。\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eご購入前に確認したいこと\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e非加熱でGIAのレポートが付くルビーをお求めになる際、本品に限らず確認しておかれるとよい点をまとめました。\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eレポートと石を照合する：\u003c\/strong\u003eレポート番号、寸法、重量が、お手元に届いた石と一致しているかをご確認ください。\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e「非加熱」の意味を正確に受け取る：\u003c\/strong\u003e「No Indications of Heating（加熱の痕跡は認められない）」は、内部の特徴の観察に基づく、加熱についてのラボの所見です。他の処理が行われていないことを述べたものではなく、色の良し悪しを評価したものでもありません。当店はこの石について「無処理」とは書きません。色とクラリティについては、レポートとあわせてご自身の目でご判断ください。\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e加熱だけでなく充填処理についても尋ねる：\u003c\/strong\u003e鉛ガラス含浸は加熱とは別の処理です。日本では、日本ジュエリー協会（JJA）と宝石鑑別団体協議会（AGL）が定めた取扱いが2009年7月1日から適用されており、鉛ガラス含浸が認められたルビーの鑑別書には「鉛ガラスの含浸処理が行われています」と記載することが取り決められています。これは日本国内の鑑別機関に適用される取り決めです。本品のGIAカラーストーン鑑別及び原産地レポート（No.2245032085）は米国のラボが発行した書類であり、追加結果欄の記載は「加熱の痕跡は認められない」です。充填処理についての記載はありません。加熱に触れた書類が、そのまま充填について述べたことにはならない点にご留意ください。\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e石を守るセッティングを選ぶ：\u003c\/strong\u003e非加熱でレポートのある石は、仕立て方で守っておきたいところです。指輪にされる場合は、ガードルとパビリオンを日常の衝撃から遮る覆輪留めや、しっかりした爪留めが現実的な選択になります。コランダムは傷がつきにくい石ですが、ファセットのある石である以上、強くぶつければ欠けることはあります。\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e加熱石との価格差の根拠を確かめる：\u003c\/strong\u003e非加熱で、かつラボの記載を伴うルビーは、同等の加熱石よりカラットあたりの価格が高くなるのが一般的です。ただし、その差を何倍と言い切れる公表された根拠を確認できていないため、当店では具体的な倍率を申し上げません。レポートに実際に何が書かれているかをご確認のうえ、価格差の根拠をご判断ください。\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e処理の開示が明確な売り手から買う：\u003c\/strong\u003e処理の状態は、ラボのレポートと一致する形で明確に示されているべきです。加熱について曖昧な記述にとどまる出品には、慎重に接してください。\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2 style=\"margin-top: 0; margin-bottom: 14px; color: #4a235a;\"\u003e宝石データ一覧\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003e商品番号\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eCG8456\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eカラット重量\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e1.65ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003e種類／品種\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e天然ルビー（コランダム）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003e形状／カット\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eオーバルミックスカット。クラウンはブリリアントカット、パビリオンはステップカット\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003e寸法\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e7.77×5.98×4.39mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003e色\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eレッド（Red）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003e光学効果\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eなし\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003e加熱処理\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eレポートの追加結果（Additional Results）欄に「加熱の痕跡は認められない（No Indications of Heating）」と記載（GIAレポートNo.2245032085）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003e産地\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eマダガスカル。レポートに記載された産地は、出所を保証するものではなく、観察と分析データに基づくGIAの意見です\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eクラリティ\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e肉眼で内包物は確認できません（当店による観察）。GIAのカラーストーンレポートにクラリティグレードの記載はありません\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003e透明度\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eトランスペアレント（Transparent）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003e硬度\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eモース硬度9。傷のつきにくさを示す尺度で、コランダムに共通する性質です\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; font-weight: 600; width: 42%;\"\u003eレポート\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px;\"\u003eGIAカラーストーン鑑別及び原産地レポートNo.2245032085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eこの1.65ct非加熱オーバルルビーを選ぶ理由\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e書類に裏づけられた非加熱と、そう述べられているだけの非加熱とを分けるのはGIAのレポートです。ルビーは、石の同定と処理の有無の両方を確かめる必要がある宝石です。レッドスピネルや、ピンクからレッドの色域のサファイアは、古くからルビーと混同されてきました。また加熱が一般的である以上、加熱の痕跡が認められないことは、主張ではなく書類の記載で示される必要があります。レポートNo.2245032085には、天然コランダム、天然ルビー、1.65ct、7.77×5.98×4.39mm、色はレッド、追加結果欄に「加熱の痕跡は認められない」、そして産地についてはマダガスカルとするGIAの意見が記録されています。\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eこの非加熱ルビーの主なポイント\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIAのレポートがある天然ルビー\u003c\/strong\u003e\u003cbr\u003e種および品種の同定が第三者機関により行われ、重量、寸法、カットスタイルが記録されています。産地についてはマダガスカルとするGIAの意見が示されています。\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e非加熱\u003c\/strong\u003e\u003cbr\u003eGIAレポートNo.2245032085の追加結果欄に「加熱の痕跡は認められない」と記載されています。これは加熱についての所見であり、他の処理が行われていないことを述べたものではありません。\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eマダガスカル産\u003c\/strong\u003e\u003cbr\u003e近年のルビーの供給地として一定の認知を得た産地であり、本品についてのGIAの原産地の意見です。\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eオーバルミックスカット\u003c\/strong\u003e\u003cbr\u003eクラウンはブリリアントカット、パビリオンはステップカットで、レポートにもそのとおり記録されています。クラウンのブリリアントファセットにより光が細かく分かれて返り、パビリオンのステップファセットは面で光を返します。オーバルの輪郭は指輪にもペンダントにも仕立てやすい形です。\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e傷のつきにくさと衝撃への強さ\u003c\/strong\u003e\u003cbr\u003eコランダムはモース硬度9で、これは傷のつきにくさを示す尺度です。衝撃に対する強さは別の性質で、GIAのレポートはコランダムの靭性を「Excellent（優）」と記載しています。\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003e商品仕様\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e商品番号：CG8456\u003c\/li\u003e\n\u003cli\u003eカラット重量：1.65ct\u003c\/li\u003e\n\u003cli\u003e種類：天然ルビー（コランダム）\u003c\/li\u003e\n\u003cli\u003eカット：オーバルミックスカット。クラウンはブリリアントカット、パビリオンはステップカット\u003c\/li\u003e\n\u003cli\u003e寸法：7.77×5.98×4.39mm\u003c\/li\u003e\n\u003cli\u003e産地：マダガスカル。GIAの原産地の意見です\u003c\/li\u003e\n\u003cli\u003e加熱処理：追加結果欄に「加熱の痕跡は認められない」と記載（GIAレポートNo.2245032085）\u003c\/li\u003e\n\u003cli\u003e色：レッド（Red）\u003c\/li\u003e\n\u003cli\u003eクラリティ：肉眼で内包物は確認できません（当店による観察）。GIAの評価ではありません\u003c\/li\u003e\n\u003cli\u003e透明度：トランスペアレント（Transparent）\u003c\/li\u003e\n\u003cli\u003e硬度：モース硬度9。傷のつきにくさを示す尺度で、コランダムに共通する性質です\u003c\/li\u003e\n\u003cli\u003eレポート：GIAカラーストーン鑑別及び原産地レポートNo.2245032085\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eマダガスカル産ルビーのお手入れ\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eぬるま湯と中性洗剤、柔らかいブラシで洗ってください\u003c\/li\u003e\n\u003cli\u003e他の石と触れ合わないよう、単独で保管してください\u003c\/li\u003e\n\u003cli\u003e激しい運動の前には外してください\u003c\/li\u003e\n\u003cli\u003e超音波洗浄機とスチーム洗浄機のご使用はお控えください\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eお届けするもの\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGIAカラーストーン鑑別及び原産地レポートNo.2245032085\u003c\/li\u003e\n\u003cli\u003e石包み（パーセルペーパー）に納めてお届けします\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eこの1.65ctルビーの用途\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eエンゲージリングのセンターストーン\u003c\/li\u003e\n\u003cli\u003e存在感のあるペンダントやカクテルリング\u003c\/li\u003e\n\u003cli\u003eGIAのレポートを伴う非加熱の天然ルビーをお探しのコレクター\u003c\/li\u003e\n\u003cli\u003e7月の誕生石としての贈り物\u003c\/li\u003e\n\u003cli\u003e記念日の贈り物\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":43488589283395,"sku":"CG8456","price":11550.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/8456001.jpg?v=1783089221"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/collections\/1112023001_36c3fdf3-7a0d-4f02-929c-401f89728ec3-1776781982.jpg?v=1781260410","url":"https:\/\/crescentgems.com\/ja\/collections\/ruby-gemstones-loose-stones-gia-certification.oembed","provider":"Crescent Gems","version":"1.0","type":"link"}