{"product_id":"1-63-ct-ceylon-orange-sapphire-gia","title":"1.63 ct Natural Heat-Treated Orange Sapphire – Oval Cut | GIA Report | Sri Lanka (Ceylon)","description":"\u003cp\u003eA natural 1.63 ct Oval \u003cstrong\u003eorange sapphire\u003c\/strong\u003e, \u003cstrong\u003eheat-treated\u003c\/strong\u003e to bring out its vivid yellowish-orange — the standard, fully disclosed enhancement in the trade — measuring 7.71 × 6.46 × 4.45 mm. Orange is one of the less common corundum colours, prized for its warm hue. \u003cstrong\u003eGIA Sapphire Origin Report #1242032081\u003c\/strong\u003e records weight, dimensions, colour and the heat treatment, gives \u003cstrong\u003eSri Lanka (Ceylon)\u003c\/strong\u003e as GIA’s origin opinion, and comments that the stone \u003cstrong\u003epassed GIA’s colour-stability test\u003c\/strong\u003e (no colour change under the test conditions).\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=\"\/en-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\"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\u003ch2\u003eGood to Know\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eView under more than one light:\u003c\/strong\u003e orange reads differently in daylight versus warm indoor light; the oval is cut to keep the colour even face-up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat is disclosed on the report\u003c\/strong\u003e (#1242032081) — the standard route for this colour, not a mark against the stone, and it doesn’t change corundum’s hardness or toughness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour-stability “passed”\u003c\/strong\u003e means no change under the test conditions — read it as a result, not a lifetime promise.\u003c\/li\u003e\n\u003cli\u003eTake the 7.71 × 6.46 × 4.45 mm measurements to your setter before choosing a mounting.\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\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/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-cn\/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-cn\/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-cn\/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-cn\/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-cn\/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\u003ch2\u003eCare \u0026amp; What’s Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eClean with warm water, mild soap and a soft brush; store separately; avoid ultrasonic and steam cleaners.\u003c\/li\u003e\n\u003cli\u003eShips with GIA Sapphire Origin Report #1242032081, packed in a gem sleeve.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":43507790184515,"sku":"CG8454","price":16548.6,"currency_code":"CNY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/8454001.jpg?v=1783578737","url":"https:\/\/crescentgems.com\/en-cn\/products\/1-63-ct-ceylon-orange-sapphire-gia","provider":"Crescent Gems","version":"1.0","type":"link"}