{"product_id":"1-63-ct-ceylon-orange-sapphire-gia","title":"1.63 ct Natural Heat-Treated Orange Sapphire – Oval Cut | GIA Certified | Sri Lanka (Ceylon)","description":"\u003cp\u003eA natural 1.63 ct Oval Cut Orange Sapphire, heat treated to bring out its vivid yellowish-orange color — the standard, fully disclosed enhancement in the sapphire trade — measuring 7.71 × 6.46 × 4.45 mm. Orange sapphire is one of the less common color varieties of natural corundum, prized for its warm, glowing hue. GIA Sapphire Origin Report #1242032081 records the weight, dimensions, color and heat treatment, gives Sri Lanka (Ceylon) as GIA's origin opinion, and comments that the stone passed GIA's color stability test — meaning no color change was observed under the test conditions.\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=\"\/en-ye\/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\"What stands out on this one isn't just the color — it's that GIA ran a color stability test on this stone and it passed, and that the report puts the origin in Sri Lanka. A passed test tells you what the lab saw under its own test conditions; it isn't a promise about twenty years from now, and I'd rather say that plainly than sell it as one. Combined with a well-cut oval that reads the color clean face-up, this is a stone I'd point a collector toward.\"\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\u003cp\u003eOrange sapphire is one of the less common color varieties of corundum — most sapphire production is blue, and clean, vivid orange without a strong pink or brown cast is among the harder colors to find in the fancy-color range.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Pure, vivid orange — without drifting toward pink (padparadscha territory) or brown — is one of the less common hues within fancy-color sapphire. GIA describes this stone's color as Yellowish Orange, which sits in that range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreatment:\u003c\/strong\u003e Heat is the standard, fully disclosed enhancement used throughout the trade to develop orange sapphire color, and GIA records it on the report as Heated. What is less common here is combining this saturation with a documented Sri Lankan origin opinion on the same report.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocumentation:\u003c\/strong\u003e GIA Sapphire Origin Report #1242032081 records weight, dimensions, color and heat treatment, and gives Sri Lanka as GIA's origin opinion. GIA prints on the report that any statement on geographic origin is an expert opinion based on a collection of observations and analytical data — we quote it the way GIA writes it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor stability:\u003c\/strong\u003e The report comments that this stone passed GIA's color stability test — no color change was observed under the test conditions. That is a test result, not a guarantee about how the stone behaves in the future.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut:\u003c\/strong\u003e The report gives the cutting style as Modified Brilliant. Brilliant faceting returns light in fine, scattered flashes rather than broad flat planes, and on a warm hue like this one the cutting is what keeps the color from reading washed out face-up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombined effect:\u003c\/strong\u003e Heat-treated orange sapphire on its own is available in the market. This specific hue, a Sri Lankan origin opinion, a passed color stability test and well-executed oval faceting on one stone is a narrower combination.\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\u003cp\u003eA few practical points to weigh before purchasing this specific stone:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eView it under more than one light source.\u003c\/strong\u003e Orange sapphire's warmth can read differently under daylight versus warm indoor lighting; this stone's oval Modified Brilliant cut is faceted to keep the color even face-up across both.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify the disclosed heat treatment through the GIA report, not a seller's word alone.\u003c\/strong\u003e GIA Report #1242032081 states the heat treatment plainly — treat any comparable listing that omits or is vague about treatment as a red flag.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderstand what the heat disclosure means.\u003c\/strong\u003e Heat is the standard, industry-accepted way this color family is brought to market, and GIA records it plainly on the report as Heated — it isn't a mark against the stone, and it does not change the hardness or the toughness of corundum.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRead what a color stability comment actually says if you are comparing reports.\u003c\/strong\u003e On this stone GIA comments that it passed the test, which means no color change was observed under the test conditions. Read it as a result, not as a promise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTake the 7.71 × 6.46 × 4.45 mm measurements to your setter before you commit to a mounting.\u003c\/strong\u003e An oval at this size is not a calibrated drop-in for every ready-made setting.\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=\"\/en-ye\/blogs\/information-pages-complete-guide\/orange-sapphire-buyers-guide\"\u003eOrange Sapphire — The Complete Buyer's Guide to the Rarest Warm-Toned Corundum\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ye\/blogs\/information-pages-complete-guide\/ceylon-sapphire-complete-guide\"\u003eCeylon Sapphire: The Complete Guide to the World's Most Trusted Sapphire Origin\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ye\/blogs\/information-pages-complete-guide\/how-sapphire-heat-treatment-works\"\u003eHow Sapphire Heat Treatment Works\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ye\/blogs\/information-pages-complete-guide\/what-is-a-gia-sapphire-report-and-how-do-you-read-one\"\u003eWhat Is a GIA Sapphire Report and How Do You Read One?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ye\/blogs\/information-pages-complete-guide\/oval-sapphire-guide\"\u003eOval Sapphire — The Complete Guide to the Most Popular Sapphire Cut\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ye\/blogs\/information-pages-complete-guide\/sapphire-buying-guide\"\u003eThe Ultimate Guide to Buying Natural Loose Sapphires\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;\"\u003eCG8454\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%;\"\u003eCarat Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e1.63 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; width: 42%;\"\u003eSpecies \/ Variety\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eCorundum — Orange Sapphire\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%;\"\u003eShape \/ Cut\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eOval, Modified 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; width: 42%;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e7.71 × 6.46 × 4.45 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; width: 42%;\"\u003eColor \/ Intensity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eYellowish Orange\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%;\"\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; width: 42%;\"\u003eTreatment\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eHeat Treated (disclosed on GIA report)\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%;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eSri Lanka (Ceylon) — GIA's origin opinion, per its printed disclaimer\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%;\"\u003eColor stability\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003ePassed GIA's color stability test; no color change observed under the test conditions\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%;\"\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; width: 42%;\"\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; width: 42%;\"\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; width: 42%;\"\u003eLaboratory report\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px;\"\u003eGIA Sapphire Origin Report #1242032081\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 Oval Cut Orange Sapphire?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eOrange is one of the less common color varieties of corundum, valued by collectors and jewelry buyers for its warm, vivid glow — a color that on this stone was brought out by heat, which the report discloses. The oval outline and Modified Brilliant faceting carry that hue well face-up, which is what separates an orange sapphire that reads vivid from one that reads washed out.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Benefits of this Natural 1.63 ct Oval Cut Orange Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIA Origin Report\u003c\/strong\u003e\u003cbr\u003eGIA Sapphire Origin Report #1242032081 records weight, dimensions, color and heat treatment, and gives Sri Lanka as GIA's origin opinion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAn Uncommon Color\u003c\/strong\u003e\u003cbr\u003eOrange is one of the less common color varieties of corundum. On this stone the hue was developed by heat, disclosed on the report.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor Stability Test Passed\u003c\/strong\u003e\u003cbr\u003eGIA comments that this stone passed its color stability test — no color change was observed under the test conditions. A test result, not a guarantee about the future.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatement Size\u003c\/strong\u003e\u003cbr\u003eAt 1.63 carats and 7.71 × 6.46 mm face-up, the color has real presence as a ring or pendant center stone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHard-Wearing\u003c\/strong\u003e\u003cbr\u003eCorundum at Mohs 9 — that is scratch resistance, not resistance to a knock. GIA's report lists corundum's toughness as excellent, which is the separate property that matters for everyday wear.\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\u003eItem #: CG8454\u003c\/li\u003e\n\u003cli\u003eCarat Weight: 1.63 ct\u003c\/li\u003e\n\u003cli\u003eSpecies \/ Variety: Corundum — Orange Sapphire\u003c\/li\u003e\n\u003cli\u003eShape \/ Cut: Oval, Modified Brilliant\u003c\/li\u003e\n\u003cli\u003eDimensions: 7.71 × 6.46 × 4.45 mm\u003c\/li\u003e\n\u003cli\u003eColor \/ Intensity: Yellowish Orange\u003c\/li\u003e\n\u003cli\u003ePhenomenon: None\u003c\/li\u003e\n\u003cli\u003eTreatment: Heat Treated (disclosed on GIA report)\u003c\/li\u003e\n\u003cli\u003eOrigin: Sri Lanka (Ceylon) — GIA's origin opinion on Report #1242032081\u003c\/li\u003e\n\u003cli\u003eColor stability: passed GIA's color stability test; no color change observed under the test conditions\u003c\/li\u003e\n\u003cli\u003eClarity: inclusions visible under 10× — our own assessment, not a GIA grade\u003c\/li\u003e\n\u003cli\u003eTransparency: Transparent\u003c\/li\u003e\n\u003cli\u003eHardness: 9 (Mohs)\u003c\/li\u003e\n\u003cli\u003eLaboratory report: GIA Sapphire Origin Report #1242032081\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eCare of Your Ceylon Orange Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eClean with lukewarm water and mild soap using a soft brush\u003c\/li\u003e\n\u003cli\u003eStore separately to avoid surface contact\u003c\/li\u003e\n\u003cli\u003eRemove before heavy physical activity\u003c\/li\u003e\n\u003cli\u003eAvoid ultrasonic or steam cleaners\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eGIA Sapphire Origin Report #1242032081\u003c\/li\u003e\n\u003cli\u003eGemstone packed in a gem sleeve\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003ePerfect Uses for this 1.63 ct Orange Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eStatement cocktail ring center stone\u003c\/li\u003e\n\u003cli\u003eEngagement ring center stone in yellow or rose gold\u003c\/li\u003e\n\u003cli\u003eCustom pendant commission\u003c\/li\u003e\n\u003cli\u003eCollectors of GIA-documented orange sapphire\u003c\/li\u003e\n\u003cli\u003eDistinctive fine jewelry centerpiece\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":43507790184515,"sku":"CG8454","price":2445.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/8454001.jpg?v=1783578737","url":"https:\/\/crescentgems.com\/en-ye\/products\/1-63-ct-ceylon-orange-sapphire-gia","provider":"Crescent Gems","version":"1.0","type":"link"}