{"title":"トリリアントサファイア｜デザイナー向けの三角形のルース","description":"\u003cp\u003eトリリアント（トリリオン）カットは、ファセットカットのなかでも特に大胆な形のひとつです。3辺の長さがそろった三角形の輪郭に、中心から放射状に広がるブリリアントのファセットを施したカットで、ほかのカットにはない存在感があります。トリリオンのサファイアはモダンで幾何学的な印象を与え、正面から見た面積がカラット重量から想像するよりもずっと大きく見えます。スリーストーンリング、シグネチャーピース、建築的なデザインのオーダーメイドを手がけるデザイナーに愛されています。サファイアのカットの比較については、\u003ca href=\"\/ja-cn\/blogs\/information-pages-complete-guide\/the-best-sapphire-cut-for-an-engagement-ring-explained\"\u003eサファイアのベストカットガイド\u003c\/a\u003eをご覧ください。\u003c\/p\u003e\n\n\u003ch2\u003eCrescent Gemsのトリリアントサファイアが選ばれる理由\u003c\/h2\u003e\n\n\u003cp\u003eトリリオンは、美しくカットするのが難しい形です。3つの鋭い角は丁寧にファセットを施さないと欠けやすく、対称性も正確でなければなりません。当店のトリリオンは、スリランカの自社工房で手作業によりカットしています。加熱処理の有無は、一石ごとに商品ページに明記しています。詳しくは\u003ca href=\"\/ja-cn\/pages\/heated-vs-unheated\"\u003e加熱・非加熱ガイド\u003c\/a\u003eをご覧ください。上質な石には\u003cstrong\u003eGIAレポート\u003c\/strong\u003eが付属します。ご依頼に応じて、その石を撮影した動画を個別にお送りします。\u003c\/p\u003e\n\n\u003ch2\u003eトリリアントサファイアの選び方\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eプロポーション。\u003c\/strong\u003e3辺の長さがそろい、角が均等に守られている石を選びましょう。\u003cstrong\u003eトリリオンに合う色。\u003c\/strong\u003e\u003ca href=\"\/ja-cn\/collections\/blue-sapphire\"\u003eブルー\u003c\/a\u003eのトリリオンは、両脇に\u003ca href=\"\/ja-cn\/collections\/oval-sapphire-engagement-ready-loose-stones\"\u003eオーバル\u003c\/a\u003eや\u003ca href=\"\/ja-cn\/collections\/round-sapphires-calibrated-loose-stones\"\u003eラウンド\u003c\/a\u003eのサイドストーンを添えたスリーストーンリングのセンターストーンとして印象的です。\u003ca href=\"\/ja-cn\/collections\/teal-sapphire-gemstones-unheated-blue-green-stones\"\u003eティール\u003c\/a\u003eや\u003ca href=\"\/ja-cn\/collections\/loose-purple-sapphires-unheated-ceylon-stones\"\u003eパープル\u003c\/a\u003eのトリリオンは、特に個性が際立ちます。\u003cstrong\u003eセッティング。\u003c\/strong\u003e角を守るため、当店では3つの先端すべてをV字の爪で留めることをおすすめしています。これは当店としての推奨です。イエローゴールドやホワイトゴールドの覆輪留めにすると、最もすっきりとしたモダンな印象になります。セッティングについては\u003ca href=\"\/ja-cn\/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。\u003c\/p\u003e\n\n\u003ch2\u003eサイドストーンとしてのトリリオン\u003c\/h2\u003e\n\n\u003cp\u003eテーパードのトリリオンサファイアは、\u003ca href=\"\/ja-cn\/collections\/ceylon-blue-sapphire-over-1-carat\"\u003eブルー\u003c\/a\u003e、\u003ca href=\"\/ja-cn\/collections\/teal-sapphire-over-1-carat-unheated-natural-loose-stones\"\u003eティール\u003c\/a\u003e、\u003ca href=\"\/ja-cn\/collections\/peach-sapphire-over-1-carat-natural-loose-stones\"\u003eピーチ\u003c\/a\u003eのセンターストーンの両脇に添えるサイドストーンとして広く使われています。規格サイズのトリリオンのマッチングペアは、\u003ca href=\"\/ja-cn\/collections\/matched-gemstone-pairs\"\u003eサファイアのマッチングペアコレクション\u003c\/a\u003eをご覧ください。そのほかの変形カットは\u003ca href=\"\/ja-cn\/collections\/fancy-cut-sapphires-usa\"\u003eファンシーカットサファイアコレクション\u003c\/a\u003eでご覧いただけます。\u003c\/p\u003e\n\n\u003cp\u003eお問い合わせは\u003ca href=\"mailto:crescentgems@gmail.com\"\u003ecrescentgems@gmail.com\u003c\/a\u003eまで。14日間返品可。日本へ追跡付きの国際便でお届けします。\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003e関連コレクション：\u003ca href=\"\/ja-cn\/collections\/pear-cut-sapphires-usa\"\u003eペアシェイプサファイア\u003c\/a\u003e - \u003ca href=\"\/ja-cn\/collections\/fancy-cut-sapphires-usa\"\u003eファンシーカットサファイア\u003c\/a\u003e - \u003ca href=\"\/ja-cn\/collections\/oval-sapphire-engagement-ready-loose-stones\"\u003eオーバルサファイア\u003c\/a\u003e - \u003ca href=\"\/ja-cn\/collections\/matched-gemstone-pairs\"\u003eマッチングペア\u003c\/a\u003e - \u003ca href=\"\/ja-cn\/collections\/untreated-sapphires\"\u003e非加熱サファイア一覧\u003c\/a\u003e - \u003ca href=\"\/ja-cn\/collections\/all-sapphire-gemstones\"\u003eサファイア一覧\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e","products":[{"product_id":"1-21-ct-trillion-shape-blue-sapphire","title":"1.21 ct Natural Heated Blue Sapphire – Trillion (Trilliant) Cut","description":"\u003cp\u003eA natural 1.21 carat blue sapphire in a trillion (trilliant) cut, heat treated. Trillion-cut blue sapphire is one of the less common format combinations in the market — most blue sapphires are cut oval or cushion for weight efficiency, so a true trillion represents a deliberate shape choice. The three-sided geometric outline of the trillion produces a face-up footprint significantly larger than the carat weight suggests, and the equal-sided triangular form has a bold, architectural character that stands apart from conventional engagement ring shapes.\u003c\/p\u003e\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-cn\/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 1.21 ct trillion-cut blue sapphire combines a dark, richly saturated Ceylon blue with a step-cut triangular silhouette — a shape combination genuinely uncommon in the blue sapphire market, where most material is cut oval or cushion.\"\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eGood to Know\u003c\/h2\u003e\u003cp\u003eA few practical points to weigh before purchasing this specific stone:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eView the stone in daylight and under warm indoor light —\u003c\/strong\u003e dark saturated blues can read almost inky under low light, so confirm the tone works in the lighting where you'll wear it most.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt 7.05 x 6.30mm with three pointed corners,\u003c\/strong\u003e this stone requires a setting with V-prong or protected corner tips — standard for trillion cuts but worth confirming with your jeweler before mounting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhen comparison-shopping,\u003c\/strong\u003e confirm heat treatment disclosure and lab source in writing, and ask whether any comparable stone offered is a true trillion or a modified triangular cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeigh the scarcity noted above,\u003c\/strong\u003e since a true trillion-cut center stone in a dark, saturated blue is harder to source than an oval or cushion of the same color and weight.\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\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eLearn More About This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/ja-cn\/blogs\/information-pages-complete-guide\/blue-sapphire-buyers-guide\"\u003eBlue Sapphire Buyer's Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja-cn\/blogs\/information-pages-complete-guide\/what-is-an-unheated-sapphire\"\u003eUnheated Sapphire Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja-cn\/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-cn\/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-cn\/blogs\/information-pages-complete-guide\/sapphire-buying-guide\"\u003eSapphire Buying Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja-cn\/blogs\/information-pages-complete-guide\/how-to-care-for-a-sapphire-engagement-ring-cleaning-storage-and-what-to-avoid\"\u003eHow to Care for a Sapphire Engagement Ring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":42665947758659,"sku":"CG8228","price":1400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/stone_CG8228_image-1.jpg?v=1778351201"},{"product_id":"0-42-ct-trillion-purple-sapphire-ceylon-unheated","title":"0.42 ct Natural Unheated Violet Sapphire – Trillion (Trilliant) Cut | AGCL Certified | Sri Lanka (Ceylon)","description":"\u003cp\u003eA natural 0.42 carat violet sapphire in a trillion (trilliant) cut, completely unheated, documented on AGCL Report #M262743. The trillion is an equal-sided triangular shape that creates a larger face-up appearance than oval or round equivalents of the same weight, and in violet sapphire, the three-sided outline creates a striking geometric accent. At 0.42 carats, this stone is well-sized for earring accent positions, three-stone ring side stones, and small pendant designs where the trillion's distinctive outline adds visual character.\u003c\/p\u003e\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-cn\/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\"A trillion cut on unheated violet sapphire is a combination I don't see often — most trillion material goes to blue or heat-treated stones, so finding this 0.42 ct at 4.50 x 4.46 x 2.85 mm with clean, even color and no thermal history made it an easy stone to select.\"\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eGood to Know\u003c\/h2\u003e\u003cp\u003eA few practical points to weigh before purchasing this specific stone:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the pointed corners in person or on video.\u003c\/strong\u003e Trillion cuts have three vulnerable corners — ask to see close-up video of the culet area before committing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlan a protective setting.\u003c\/strong\u003e At 4.50 x 4.46 x 2.85 mm, this trillion suits prong or bezel settings with corner protection for ring use, or a secure bail for pendant use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAsk for the underlying lab report, not a summary.\u003c\/strong\u003e AGCL Report #M262743 documents this stone's treatment status independently — request it when comparison-shopping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeigh the cut against availability.\u003c\/strong\u003e Trillion-cut violet sapphire in unheated quality is uncommon; this stone's combination of shape, color, and treatment status is not easily replaced at this weight.\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\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eLearn More About This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/ja-cn\/blogs\/information-pages-complete-guide\/violet-sapphires-the-rare-beauty-of-royal-purple-elegance\"\u003eViolet Sapphire Buyer's Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja-cn\/blogs\/information-pages-complete-guide\/what-is-an-unheated-sapphire\"\u003eUnheated Sapphire Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja-cn\/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-cn\/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-cn\/blogs\/information-pages-complete-guide\/violet-sapphires-the-rare-beauty-of-royal-purple-elegance\"\u003eViolet vs Purple vs Blue Sapphire\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja-cn\/blogs\/information-pages-complete-guide\/sapphire-buying-guide\"\u003eSapphire Buying Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":43009085308995,"sku":"CG8386","price":105.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/1112023001_8daca6e3-adbf-4f78-ba79-434e056a603b.jpg?v=1778308043"},{"product_id":"0-61-ct-trillion-violet-sapphire-unheated","title":"0.61 ct Natural Unheated Violet Sapphire – Trillion Cut | AGCL Certified | Sri Lanka (Ceylon)","description":"\u003cp\u003eA natural 0.61 ct Violet Sapphire cut in a trillion shape, completely unheated, documented on AGCL Report #M263121. This Violet Sapphire's three-sided, equal-length outline creates a larger face-up appearance than the carat weight alone suggests, making it an efficient way to display violet color at a compact size. Unheated status means the color is entirely natural — no thermal treatment has been used to modify or enhance the hue of this Violet Sapphire.\u003c\/p\u003e\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-cn\/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\"The trillion cut on this 0.61 ct stone earns its keep — the flat triangular face genuinely reads larger and shows more color per carat than an oval or round of the same weight, which matters more in violet sapphire than in most colors since the hue itself is already uncommon at this size.\"\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eGood to Know\u003c\/h2\u003e\u003cp\u003eA few practical points to weigh before purchasing this specific stone:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut consideration:\u003c\/strong\u003e Trillion-cut stones display sharp corners that need protective prong or bezel placement in a setting — discuss corner protection with your jeweler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClarity expectations:\u003c\/strong\u003e Graded Slightly Included — inclusions may be visible to the unaided eye in certain lighting; request close-up photos if clarity is a priority.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale for your design:\u003c\/strong\u003e At 5.17 x 5.03mm, this stone reads as a compact accent or side stone rather than a solitaire center.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin disclosure:\u003c\/strong\u003e Sri Lanka (Ceylon) origin is the store's own assessment and is not addressed by the AGCL report.\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\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eLearn More About This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/ja-cn\/blogs\/information-pages-complete-guide\/violet-sapphires-the-rare-beauty-of-royal-purple-elegance\"\u003eViolet Sapphire Buyer's Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja-cn\/blogs\/information-pages-complete-guide\/what-is-an-unheated-sapphire\"\u003eUnheated Sapphire Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja-cn\/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-cn\/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-cn\/blogs\/information-pages-complete-guide\/how-cut-affects-sapphire\"\u003eHow Cut Affects a Sapphire\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja-cn\/blogs\/information-pages-complete-guide\/sapphire-buying-guide\"\u003eSapphire Buying Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":43035172896835,"sku":"CG8398","price":183.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/1112023001_8d6cfd39-e09c-43a2-8de6-bd93a7aa0517.jpg?v=1778308083"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/collections\/1112023001_8d6cfd39-e09c-43a2-8de6-bd93a7aa0517.jpg?v=1781260427","url":"https:\/\/crescentgems.com\/ja-cn\/collections\/trilliant-sapphires-triangular-loose-stones.oembed","provider":"Crescent Gems","version":"1.0","type":"link"}