{"title":"Natural Star Sapphires - Asterism Cabochon Loose Stones","description":"\u003cp\u003eStar sapphire is one of the most extraordinary phenomena in the gemstone world — a star of light that glides across the surface of a cabochon-cut corundum when illuminated by a single point light source. The star is created by dense, precisely aligned rutile silk (microscopic titanium dioxide needles) inside the crystal, reflecting light in three directions that intersect at 60° angles to form the star.\u003c\/p\u003e\n\n\u003ch2\u003eWhy our star sapphires\u003c\/h2\u003e\n\n\u003cp\u003eOur star sapphires are sourced from Sri Lanka, the origin of the famous Star of India (563 carats, now in the American Museum of Natural History) and the Star of Lanka (193 carats). Each stone here carries its own GIA report, and each stone's page states that stone's treatment finding in the report's own words rather than inferring anything from the star.\u003c\/p\u003e\n\n\u003ch2\u003eWhat a report says about a star sapphire, and what it does not\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe star itself.\u003c\/strong\u003e A GIA colored-stone report records asterism as an observation: the phenomenon field reads \u003cem\u003eDisplaying Asterism\u003c\/em\u003e. GIA states that it does not grade or provide quality analysis for sapphire or other colored stones, and no laboratory publishes a grading scheme for a star. So there is no laboratory grade for a star, and we do not publish an opinion of our own in place of one. Put the stone under one direct light source, tilt it, and judge it yourself — ask us for more photographs and video and we will send them.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBody color.\u003c\/strong\u003e Star sapphires occur in blue, gray, black, purple, violet, pink, yellow and white. The color on a stone's report is the laboratory's own color description of that stone; anything we add about color is our description and not the laboratory's.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTransparency.\u003c\/strong\u003e Star sapphires run from transparent to opaque. A GIA report prints the transparency it observed as a field value, and that field value is what each stone's page carries. We do not rank one transparency above another.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCabochon shape.\u003c\/strong\u003e Star stones are cut as cabochons (a smooth, domed surface) rather than faceted, because the dome is the surface on which the reflections from the silk form a star instead of being broken up by facets. Dome height changes how the star reads, and it is one of the things to look at in the photographs.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNatural vs. synthetic.\u003c\/strong\u003e Synthetic star sapphires (often called Linde or Lindy stars) are common and inexpensive. Whether a stone is natural or synthetic is answered by a report field rather than by eye: a GIA report names the species and the variety of the material it examined, and each stone's page prints what its own report says. See \u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/how-to-tell-if-star-sapphire-is-natural\"\u003eHow to Tell If a Star Sapphire Is Natural\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eHeat, silk and the star\u003c\/h2\u003e\n\n\u003cp\u003eThe star exists because of rutile silk. In faceted sapphires, heat treatment is used to dissolve that silk: above roughly 1,400°C it returns to the corundum lattice, releasing titanium to pair with iron and deepen blue color, and dissolving the silk takes the star with it. But heat does not run in one direction only. GIA publishes that heating can also recrystallize silk and make it more prominent, which lets a stone show a stronger star, and that titanium diffusion is used to create stars in sapphire. A visible star is therefore not evidence about a stone's treatment history in either direction. What a laboratory found is on that stone's own report, and each stone's page prints what its report says. For the full science, see \u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/how-sapphire-heat-treatment-works\"\u003eHow Sapphire Heat Treatment Works\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eLearn about star sapphires\u003c\/h2\u003e\n\n\u003ch3\u003eStar sapphire buying guides\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/star-sapphire-complete-buyers-guide\"\u003eStar Sapphire Complete Buyer's Guide\u003c\/a\u003e — the definitive resource\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/how-to-tell-if-star-sapphire-is-natural\"\u003eHow to Tell If a Star Sapphire Is Natural\u003c\/a\u003e — spotting synthetics and fakes\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/sapphire-buying-guide\"\u003eUltimate Sapphire Buying Guide\u003c\/a\u003e — the central hub for all sapphire education\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/sapphire-pricing-explained\"\u003eSapphire Pricing Explained\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/interactive-sapphire-color-chart\"\u003eInteractive Sapphire Color Chart\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe science behind the star\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/how-to-read-sapphire-inclusions\"\u003eHow to Read Sapphire Inclusions\u003c\/a\u003e — rutile silk, the inclusion that creates asterism\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/what-is-an-unheated-sapphire\"\u003eWhat Is an Unheated Sapphire?\u003c\/a\u003e — why heat and asterism work against each other\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/how-sapphire-heat-treatment-works\"\u003eHow Sapphire Heat Treatment Works\u003c\/a\u003e — the silk dissolution process\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/sapphire-colors-explained\"\u003eSapphire Colors Explained\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/how-gems-are-formed-nature-s-incredible-underground-process\"\u003eHow Gemstones Are Formed\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEngagement rings and custom jewelry\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/how-to-choose-sapphire-engagement-ring\"\u003eHow to Choose a Sapphire for Your Engagement Ring\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/how-to-commission-custom-sapphire-ring\"\u003eHow to Commission a Custom Ring\u003c\/a\u003e — we prefer a bezel or another protective setting for a star cabochon, and that is our preference rather than a line from any report\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-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 Ring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eReports and trust\u003c\/h3\u003e\n\u003cul\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\"\u003eHow to Read a GIA Sapphire Report\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/beryllium-diffusion-sapphires-explained\"\u003eBeryllium Diffusion Explained\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOrigin and sourcing\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/ceylon-sapphire-complete-guide\"\u003eCeylon Sapphire Complete Guide\u003c\/a\u003e — sapphire from Sri Lanka, and what an origin opinion on a report does and does not say\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/ratnapura-gem-market-how-sapphires-are-traded\"\u003eThe Ratnapura Gem Market\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/art-of-pit-mining-gemstones-sri-lanka\"\u003ePit Mining in Sri Lanka\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/madagascar-sapphire-guide\"\u003eMadagascar Sapphire Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eComparisons\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/sapphire-vs-diamond-engagement-rings-the-real-differences-and-how-to-choose-the-right-sapphire\"\u003eSapphire vs. Diamond\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/sapphire-vs-spinel-collectors-guide\"\u003eSapphire vs. Spinel\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-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\n\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/cats-eye-chrysoberyl-buyers-guide\"\u003eCat's Eye Chrysoberyl Guide\u003c\/a\u003e — another phenomenon stone from Sri Lanka\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eHave a question about a specific star sapphire? Email \u003ca href=\"mailto:crescentgems@gmail.com\"\u003ecrescentgems@gmail.com\u003c\/a\u003e. We can send additional photos and video showing the star under a direct light source. 14-day return on every order. Free US shipping; international shipping via FedEx and UPS.\u003c\/p\u003e","products":[{"product_id":"3-40-ct-oval-violet-star-sapphire-unheated-gia","title":"3.40 ct Natural Unheated Violet Star Sapphire – Oval | GIA Report","description":"\u003cp\u003eA natural 3.40 ct \u003cstrong\u003eviolet star sapphire\u003c\/strong\u003e, Oval, Double Cabochon, \u003cstrong\u003eunheated\u003c\/strong\u003e, measuring 8.64 × 6.76 × 5.69 mm, on \u003cstrong\u003eGIA Report 1236950499\u003c\/strong\u003e. GIA records Natural Star Sapphire, Colour Violet, Transparency Translucent, Phenomenon \u003cstrong\u003eDisplaying Asterism\u003c\/strong\u003e and Additional Results \u003cstrong\u003eNo Indications of Heating\u003c\/strong\u003e. Geographic origin reads Not Requested, so the \u003cstrong\u003eSri Lanka\u003c\/strong\u003e origin here is our own sourcing record.\u003c\/p\u003e\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2\u003e\u003cspan role=\"text\" style=\"color: #4a235a\"\u003e\u003cstrong\u003eExpert Opinion\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\"GIA's report gives the color as Violet and the phenomenon as Displaying Asterism, and those are the words I am going to use for it. I am not going to grade the stone for you, because any adjective I added would be mine rather than the report's. Look at the images and the video, and ask me anything the report does not answer.\" — Ahmed Shareek\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eGood to Know\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify it:\u003c\/strong\u003e run report 1236950499 through GIA’s Report Check before buying.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo star is graded:\u003c\/strong\u003e no lab issues a quality, colour or cut grade for a star.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeeing the star:\u003c\/strong\u003e hold the cabochon under a single concentrated light; the asterism is directional.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin is our own sourcing record,\u003c\/strong\u003e not a lab finding.\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\/star-sapphire-complete-buyers-guide\"\u003eStar Sapphire — The Complete Buyer's Guide to the Phenomenon Gemstone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/how-to-tell-if-star-sapphire-is-natural\"\u003eHow to Tell If a Star Sapphire Is Natural: A Complete Identification Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/violet-sapphires-the-rare-beauty-of-royal-purple-elegance\"\u003eViolet Sapphire — The Complete Buyer's Guide to Color, Origin, and Value\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\/how-to-commission-custom-sapphire-ring\"\u003eCustom Sapphire Rings — The Complete Guide to Designing Your Own\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\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/what-is-an-unheated-sapphire\"\u003eWhat Is an Unheated Sapphire? The Complete Buyer's Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCare \u0026amp; What’s Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWarm water, mild soap and a soft brush; store separately; we avoid ultrasonic and steam on a stone we did not set.\u003c\/li\u003e\n\u003cli\u003eShips with GIA Report 1236950499, packed in a gem sleeve.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":42665945923651,"sku":"CG8293","price":2380.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/stone_CG8293_image-1.jpg?v=1778308923"},{"product_id":"pink-oval-ceylon-sapphire-27","title":"3.26 ct Natural Pink Star Sapphire - Oval, Double Cabochon | Unheated | GIA Report | Sri Lanka","description":"\u003cp\u003eA natural 3.26 ct \u003cstrong\u003epink star sapphire\u003c\/strong\u003e (Oval, Double Cabochon) on \u003cstrong\u003eGIA Sapphire Origin Report #2235836233\u003c\/strong\u003e (21 Jan 2026). The report records Natural Corundum \/ Natural Star Sapphire, Colour Purplish Pink, Transparency Transparent, Phenomenon \u003cstrong\u003eDisplaying Asterism\u003c\/strong\u003e, Additional Results \u003cstrong\u003eNo Indications of Heating\u003c\/strong\u003e, 3.26 ct and 8.66 × 7.95 × 5.15 mm. Geographic origin is given as \u003cstrong\u003eSri Lanka\u003c\/strong\u003e — GIA’s expert opinion, as the report’s printed comment states.\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\"A 3.26 carat oval double cabochon that carries a GIA origin opinion is what I was buying here. Almost everything on this page is the report's. The report's: species Natural Corundum, variety Natural Star Sapphire, shape Oval, cutting style Double Cabochon, color Purplish Pink, Displaying Asterism in the Phenomenon field, No Indications of Heating under Additional Results, and Sri Lanka in the Geographic Origin field as GIA's expert opinion, which is how GIA itself describes it on the paper. What is mine is the decision to stop where the report stops. GIA does not grade colored stones, so I do not describe the quality of the star, and I would rather you looked at the stone than read my adjectives.\"\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eGood to Know\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRead the report:\u003c\/strong\u003e #2235836233 on GIA’s Report Check; we publish a scan and email the full-resolution file on request.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo star is graded:\u003c\/strong\u003e no lab issues a quality, colour or cut grade for a star — this page carries field values only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeeing the asterism:\u003c\/strong\u003e hold the stone under a single concentrated light; the star is directional.\u003c\/li\u003e\n\u003cli\u003eOur Try-On service and extra images on request are there so you can look rather than take our word.\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\/pink-sapphire-buyers-guide\"\u003ePink Sapphire Buyer's Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/star-sapphire-complete-buyers-guide\"\u003eStar Sapphire Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-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=\"\/en-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=\"\/en-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=\"\/en-cn\/blogs\/information-pages-complete-guide\/sapphire-buying-guide\"\u003eSapphire Buying Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCare \u0026amp; What’s Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWarm water, mild soap and a soft brush; store separately; we avoid ultrasonic and steam on a stone we did not set.\u003c\/li\u003e\n\u003cli\u003eShips with GIA Sapphire Origin Report #2235836233, packed in a gem sleeve.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":42665946021955,"sku":"CG8288","price":2834.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/stone_CG8288_image-1.jpg?v=1778308921"},{"product_id":"8-09-ct-blue-ceylon-star-sapphire-unheated","title":"8.09 ct Blue Star Sapphire – Oval, Double Cabochon | Unheated | Sri Lanka | GIA Report #2233980218","description":"\u003cp\u003eAn 8.09 ct blue \u003cstrong\u003estar sapphire\u003c\/strong\u003e (Oval, Double Cabochon) on \u003cstrong\u003eGIA Sapphire Origin Report #2233980218\u003c\/strong\u003e. The report records Natural Corundum \/ Natural Star Sapphire, Colour Blue, Transparency Translucent, Phenomenon \u003cstrong\u003eDisplaying Asterism\u003c\/strong\u003e, Additional Results \u003cstrong\u003eNo Indications of Heating\u003c\/strong\u003e, and 8.09 ct \/ 12.84 × 10.37 × 5.96 mm. Geographic origin is given as \u003cstrong\u003eSri Lanka\u003c\/strong\u003e — GIA’s expert opinion, as the report’s Comments state.\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\"Looking at this stone in the hand myself, I sometimes read a grey cast in the blue — that is my own eye and not a grade, and GIA's report records the color as Blue.\"\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eGood to Know\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRead the report:\u003c\/strong\u003e #2233980218 on GIA’s Report Check; we publish a scan and will email the full-resolution file on request.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo star is graded:\u003c\/strong\u003e no lab issues a quality, colour or cut grade for a star — the report carries field values only, and so does this page.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeeing the asterism:\u003c\/strong\u003e hold the stone under a single concentrated light; the star is directional.\u003c\/li\u003e\n\u003cli\u003eOur Try-On service and extra images on request are there so you can look rather than take our word.\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\/star-sapphire-complete-buyers-guide\"\u003eStar Sapphire Buyer's Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/how-to-tell-if-star-sapphire-is-natural\"\u003eHow to Tell If a Star Sapphire Is Natural\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-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=\"\/en-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=\"\/en-cn\/blogs\/information-pages-complete-guide\/what-is-a-gia-sapphire-report-and-how-do-you-read-one\"\u003eGIA Sapphire Report Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/pages\/ceylon-sapphire-origin-guide\"\u003eSri Lanka Sapphire Origin Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/how-to-commission-custom-sapphire-ring\"\u003eCustom Sapphire Ring Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/best-sapphires-under-10000\"\u003eSapphires Under $10,000\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCare \u0026amp; What’s Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWarm water, mild soap and a soft brush; store separately; we avoid ultrasonic and steam on a stone we did not set.\u003c\/li\u003e\n\u003cli\u003eShips with GIA Sapphire Origin Report #2233980218, packed in a gem sleeve.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":43174339543107,"sku":"CG8440","price":4040.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/stone_CG8440_image-1.jpg?v=1779989747"},{"product_id":"7-99-ct-round-purple-star-sapphire-unheated","title":"7.99 ct Natural Purple Star Sapphire - Round, Double Cabochon | Unheated | GIA Report | Sri Lanka","description":"\u003cp\u003eA natural 7.99 ct \u003cstrong\u003epurple star sapphire\u003c\/strong\u003e (Round, Double Cabochon) on \u003cstrong\u003eGIA Sapphire Origin Report #5232980224\u003c\/strong\u003e (1 July 2026). The report records Natural Corundum \/ Natural Star Sapphire, Colour Purple, Transparency Transparent to Translucent, Phenomenon \u003cstrong\u003eDisplaying Asterism\u003c\/strong\u003e, Additional Results \u003cstrong\u003eNo Indications of Heating\u003c\/strong\u003e, 7.99 ct and 10.87–11.06 × 6.63 mm. Geographic origin is given as \u003cstrong\u003eSri Lanka\u003c\/strong\u003e — GIA’s expert opinion, as the report’s printed comment states.\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\"A 7.99 carat double cabochon that carries a GIA origin opinion is what I was buying here. Almost everything on this page is the report's. The report's: species Natural Corundum, variety Natural Star Sapphire, shape Round, cutting style Double Cabochon, Displaying Asterism in the Phenomenon field, No Indications of Heating under Additional Results, and Sri Lanka in the Geographic Origin field as GIA's expert opinion, which is how GIA itself describes it on the paper. What is mine is the decision to stop where the report stops. GIA does not grade colored stones, so I do not describe the quality of the star, and I would rather you looked at the stone than read my adjectives.\"\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eGood to Know\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRead the report:\u003c\/strong\u003e #5232980224 on GIA’s Report Check; we publish a scan and email the full-resolution file on request.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo star is graded:\u003c\/strong\u003e no lab issues a quality, colour or cut grade for a star — this page carries field values only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeeing the asterism:\u003c\/strong\u003e hold the stone under a single concentrated light; the star is directional.\u003c\/li\u003e\n\u003cli\u003eOur Try-On service and extra images on request are there so you can look rather than take our word.\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\/purple-sapphire-buyers-guide\"\u003ePurple Sapphire Buyer's Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-cn\/blogs\/information-pages-complete-guide\/star-sapphire-complete-buyers-guide\"\u003eStar Sapphire Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-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=\"\/en-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=\"\/en-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=\"\/en-cn\/blogs\/information-pages-complete-guide\/sapphire-buying-guide\"\u003eSapphire Buying Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCare \u0026amp; What’s Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWarm water, mild soap and a soft brush; store separately; we avoid ultrasonic and steam on a stone we did not set.\u003c\/li\u003e\n\u003cli\u003eShips with GIA Sapphire Origin Report #5232980224, packed in a gem sleeve.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":43174591529027,"sku":"CG8441","price":3990.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/stone_CG8441_image-1.jpg?v=1779989740"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/collections\/1112023001_6f90c146-3bf9-4117-9d30-6ed99c50eb8b-1776781999.jpg?v=1781260352","url":"https:\/\/crescentgems.com\/en-cn\/collections\/natural-star-sapphires-six-ray-asterism-unheated-ceylon.oembed","provider":"Crescent Gems","version":"1.0","type":"link"}