{"product_id":"0-68-ct-round-5mm-white-sapphire-colorless","title":"0.68 ct Natural Heated White Sapphire – Round (calibrated 5mm) Cut","description":"\u003cp\u003eA natural 0.68 carat white sapphire in a 5mm round calibrated cut, colorless, heat treated. Calibrated 5mm round white sapphire is a standard designer and jeweler format — the 5mm diameter fits the most common standard solitaire and bezel settings available in the commercial setting market, making this a drop-in stone for any 5mm round setting without custom fabrication. Colorless white sapphire at Mohs 9 is the most durable colorless gemstone alternative to diamond.\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 5mm round is the single most requested calibrated size we carry — at 0.68 ct, loupe-clean, and cut to true 5mm diameter, this stone slots into virtually any standard round setting on the market without a bench adjustment.\"\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 it under multiple light sources.\u003c\/strong\u003e Colorless stones can pick up faint warmth or coolness depending on the light; check the stone under daylight-equivalent and warm indoor lighting before committing to a setting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm your setting takes a true 5mm round.\u003c\/strong\u003e This stone is calibrated to that exact diameter — verify your mounting or CAD file is specified for 5mm, since nominal \"5mm\" listings can vary slightly between suppliers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAsk about treatment disclosure when comparison shopping.\u003c\/strong\u003e Heat treatment is standard for white sapphire, but not every seller states it plainly — this listing does.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeigh calibrated precision against one-of-a-kind pricing.\u003c\/strong\u003e Calibrated stones like this one are priced for manufacturing consistency rather than rarity premiums, which is part of why the per-carat cost is accessible relative to certified fancy-color sapphires.\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\/white-sapphire-buyers-guide\"\u003eWhite 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-vs-diamond-engagement-rings-the-real-differences-and-how-to-choose-the-right-sapphire\"\u003eSapphire vs. Diamond Engagement Rings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/ja-cn\/blogs\/information-pages-complete-guide\/sapphire-vs-moissanite-vs-lab-diamond\"\u003eSapphire vs. Moissanite vs. Lab Diamond\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":42887376896067,"sku":"CG8307","price":812.27,"currency_code":"CNY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/1112023001_5ce1864c-513d-4feb-8896-82e121308196.jpg?v=1778308029","url":"https:\/\/crescentgems.com\/ja-cn\/products\/0-68-ct-round-5mm-white-sapphire-colorless","provider":"Crescent Gems","version":"1.0","type":"link"}