{"product_id":"5-39-ct-round-ceylon-blue-sapphire-unheated-gia","title":"5.39 ct Natural Unheated Blue Sapphire – Round | GIA Sapphire Origin Report 5231646038 | Sri Lanka","description":"\u003cp\u003eA natural 5.39 carat blue sapphire, round, documented on GIA Sapphire Origin Report 5231646038, dated 31 July 2025. The report prints the shape as Round, the crown as Modified Brilliant Cut and the pavilion as Step Cut, the color as Blue, the transparency as Transparent, the species as Natural Corundum and the variety as Natural Sapphire. Under its TREATMENT heading it prints No Indications of Heating.\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;\"\u003eThe Owner's View\u003c\/h2\u003e\n\u003cp style=\"font-weight: 600; margin-bottom: 6px;\"\u003e\u003ca href=\"\/en-au\/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\"I buy on the paper first. This stone came in with a GIA Sapphire Origin Report, and the two fields I read before anything else are the geographic origin opinion and the TREATMENT line. Both are printed on it. Read them yourself at reportcheck.gia.edu before you read anything I write.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhat the Report Prints\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eGIA's report places the geographic origin of this stone in Sri Lanka. GIA prints its own caveat beside that field: \"Any statement on geographic origin is an expert opinion based on a collection of observations and analytical data.\"\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e The report prints one color word, Blue, and no color grade. GIA issues no color grade for colored stones, so nothing on this page grades the color.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreatment:\u003c\/strong\u003e Under its TREATMENT heading the report prints No Indications of Heating. That is a finding about heating, and about indications of it. We therefore use the narrow word unheated, and not a whole-stone term.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight and measurements:\u003c\/strong\u003e One loose stone of 5.39 carats, measuring 10.19 - 10.43 x 6.68 mm. The first two figures are the minimum and maximum diameter of a round stone, not a length and a width.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting style:\u003c\/strong\u003e The report prints two cutting-style fields, one for each half of the stone: Modified Brilliant Cut on the crown, Step Cut on the pavilion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscription:\u003c\/strong\u003e GIA's report records an inscription on the stone reading GIA 5231646038, the same number the report carries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe document:\u003c\/strong\u003e GIA Sapphire Origin Report 5231646038, dated 31 July 2025. GIA prints on the report that it is not a guarantee or valuation, and we make no claim beyond what the paper carries. You can read it at reportcheck.gia.edu.\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\u003eRead the report yourself.\u003c\/strong\u003e Do not take a heating finding on a seller's word. GIA publishes this report at reportcheck.gia.edu, and the report number is printed above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAsk us for more images.\u003c\/strong\u003e No single photograph settles how a stone looks to you. Ask us for more images, and look at them before you decide.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlan the mounting around the measured dimensions.\u003c\/strong\u003e The report prints 10.19 - 10.43 x 6.68 mm. Ask your setter to build the mount around that girdle outline rather than around a single nominal diameter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompare like with like.\u003c\/strong\u003e If the heating finding and the lab document matter to you, ask any comparison stone's seller for the same document, not for a similar appearance.\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\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-au\/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-au\/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-au\/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-au\/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-au\/blogs\/information-pages-complete-guide\/ceylon-sapphire-complete-guide\"\u003eSapphire Origin Guide: Sri Lanka\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-au\/blogs\/information-pages-complete-guide\/is-a-round-sapphire-good-for-an-engagement-ring-cut-color-and-what-to-know-before-you-buy\"\u003eIs a Round Sapphire Good for an Engagement Ring?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-au\/blogs\/information-pages-complete-guide\/sapphire-buying-guide\"\u003eSapphire Buying Guide\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;\"\u003eCG8262\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eCarat Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e5.39 carats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eSpecies\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNatural Corundum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eVariety\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNatural 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;\"\u003eShape\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eCutting Style: Crown\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eModified Brilliant Cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eCutting Style: Pavilion\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eStep Cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eMeasurements\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e10.19 - 10.43 x 6.68 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;\"\u003eColor\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\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;\"\u003eLustre\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eVitreous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eTreatment\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNo Indications of Heating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eGeographic Origin\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eSri Lanka\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eInscription(s)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eGIA 5231646038\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eClarity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eEye-clean on our own assessment — no visible inclusions under normal viewing; 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;\"\u003eHardness\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e9 (Mohs), a characteristic of corundum the species published by GIA; this report prints no hardness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; font-weight: 600;\"\u003eLaboratory Report\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px;\"\u003eGIA Sapphire Origin Report 5231646038, dated 31 July 2025\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\u003eSpecies Characteristics and the Birthstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eGIA publishes that corundum — the species ruby and sapphire belong to — is 9 on the Mohs scale. That is a characteristic of the species and not a finding on this report, which prints no hardness. Mohs measures scratch resistance.\u003c\/p\u003e\n\n\u003cp\u003eSapphire is the September birthstone, in every color; GIA states that it \"comes in a rainbow of other colors.\" Our report prints no birthstone.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Facts from the Report\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnheated\u003c\/strong\u003e\u003cbr\u003eThe report prints No Indications of Heating under its TREATMENT heading.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeographic origin on the report\u003c\/strong\u003e\u003cbr\u003eGIA's report places the geographic origin in Sri Lanka, carrying GIA's printed expert-opinion caveat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5.39 carats, one loose stone\u003c\/strong\u003e\u003cbr\u003eThe report describes the item as one loose stone and the weight as 5.39 carats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo cutting-style fields\u003c\/strong\u003e\u003cbr\u003eModified Brilliant Cut on the crown, Step Cut on the pavilion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIA Sapphire Origin Report 5231646038\u003c\/strong\u003e\u003cbr\u003eDated 31 July 2025, and readable at reportcheck.gia.edu.\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\u003eCarat Weight: 5.39 carats\u003c\/li\u003e\n\u003cli\u003eGem Type: Natural Blue Sapphire\u003c\/li\u003e\n\u003cli\u003eSpecies: Natural Corundum\u003c\/li\u003e\n\u003cli\u003eVariety: Natural Sapphire\u003c\/li\u003e\n\u003cli\u003eShape: Round\u003c\/li\u003e\n\u003cli\u003eCutting Style, Crown: Modified Brilliant Cut\u003c\/li\u003e\n\u003cli\u003eCutting Style, Pavilion: Step Cut\u003c\/li\u003e\n\u003cli\u003eMeasurements: 10.19 - 10.43 x 6.68 mm\u003c\/li\u003e\n\u003cli\u003eColor: Blue\u003c\/li\u003e\n\u003cli\u003eTransparency: Transparent\u003c\/li\u003e\n\u003cli\u003eLustre: Vitreous\u003c\/li\u003e\n\u003cli\u003eTreatment: No Indications of Heating\u003c\/li\u003e\n\u003cli\u003eGeographic Origin: Sri Lanka\u003c\/li\u003e\n\u003cli\u003eLaboratory Report: GIA Sapphire Origin Report 5231646038\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eCare\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eGIA publishes its own cleaning guidance for sapphire and attaches its own conditions to it. We prefer not to use ultrasonic or steam cleaning on a stone we did not set, because we cannot see how the stone is held — that is our preference, not a warning from the report. Warm water, mild soap and a soft brush are what we use. Store the stone separately from other jewelry, and take it off before swimming, exercising or handling household chemicals.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWays This Stone Can Be Set\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eEngagement ring center stone\u003c\/li\u003e\n\u003cli\u003eStatement pendant center stone\u003c\/li\u003e\n\u003cli\u003eCustom jewelry commission\u003c\/li\u003e\n\u003cli\u003eCollectors of Sri Lankan sapphire with GIA documentation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":42665947136067,"sku":"CG8262","price":30241.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/image-2.jpg?v=1785416885","url":"https:\/\/crescentgems.com\/en-au\/products\/5-39-ct-round-ceylon-blue-sapphire-unheated-gia","provider":"Crescent Gems","version":"1.0","type":"link"}