{"product_id":"1-75-ct-round-ceylon-blue-sapphire-heat-treated-gia","title":"1.75 ct Natural Heat-Treated Blue Sapphire – Round Cut | GIA Certified | Sri Lanka (Ceylon)","description":"\u003cp\u003eA natural 1.75 ct blue sapphire with a round outline, heat treated, documented by GIA Sapphire Origin Report #2243032036. The report records the weight, measurements of 6.57 - 6.78 x 5.07 mm, color Blue, Heated under Additional Results, and a cutting style of Modified Brilliant Cut on the crown over a Step Cut pavilion — a mixed cut rather than a plain round brilliant. It gives Sri Lanka as the geographic origin, and prints alongside it that any statement on geographic origin is an expert opinion based on a collection of observations and analytical data. Clarity is our own assessment: GIA colored-stone reports carry no clarity grade.\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;\"\u003eExpert Opinion\u003c\/h2\u003e\n\u003cp style=\"font-weight: 600; margin-bottom: 6px;\"\u003e\u003ca href=\"\/en-fr\/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 I like about this stone is how honestly it performs for what it is — a GIA-documented Sri Lankan blue at a size and price where a buyer can own a fully documented sapphire rather than a described one. The outline is even, the blue holds up under mixed lighting, and there's nothing about it you need to look past.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eRarity Analysis\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eThis is a classic Sri Lankan blue sapphire, GIA-documented, and heated — the report records Heated under Additional Results. It is not a one-in-a-thousand phenomenon stone, and we won't describe it as one. What it does offer are things you can check against the document rather than take on trust:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSri Lankan Origin, Given by GIA\u003c\/strong\u003e\u003cbr\u003eGIA Sapphire Origin Report #2243032036 gives Sri Lanka as the geographic origin. GIA prints on the report that any statement on geographic origin is an expert opinion based on a collection of observations and analytical data, so we quote it as an opinion and never as a confirmation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA Mixed Cut, Not a Plain Round Brilliant\u003c\/strong\u003e\u003cbr\u003eThe report records two cutting styles: a Modified Brilliant Cut crown over a Step Cut pavilion. Brilliant facets on top divide returning light finely; step facets below return it in broader planes. The round outline measures 6.57 - 6.78 mm across.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEye-Clean Clarity\u003c\/strong\u003e\u003cbr\u003eWe assess this stone as eye clean — no inclusions visible to the unaided eye. That is our own assessment, not a GIA grade: GIA colored-stone reports carry no clarity grade at all.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Recorded on the Report\u003c\/strong\u003e\u003cbr\u003eThe Additional Results field of GIA Report #2243032036 reads Heated. That is what the document records about heating; it is not a statement that no other treatment was applied, and we do not present it as one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocumented, Not Just Described\u003c\/strong\u003e\u003cbr\u003eWeight, measurements, color, cutting style and heating can all be checked against GIA Report #2243032036 rather than taken on a seller's word, and the origin can be read there as GIA's opinion. Clarity is the exception: that is our own assessment, and GIA issues no clarity grade for colored stones.\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 buying this stone, or any round-cut Ceylon blue sapphire in this size range:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm the Lab Report Matches the Stone\u003c\/strong\u003e\u003cbr\u003eAlways check that the GIA report number (2243032036) and its stated measurements match the physical stone before you buy — we encourage you to review the report alongside the listing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Is Not the Only Question to Ask\u003c\/strong\u003e\u003cbr\u003eHeating is routine in the sapphire trade, and the Additional Results field of GIA Report #2243032036 reads Heated. Diffusion is a separate and more consequential treatment, disclosed under different rules in most markets. Ask any seller which treatments their document actually covers — a report that addresses heating has, by itself, addressed heating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRound Outlines Favor Certain Settings\u003c\/strong\u003e\u003cbr\u003eA round outline works well in solitaire, halo, and three-stone settings; if you have a specific ring style in mind, confirm the 6.57 - 6.78 x 5.07 mm diameter suits your setting's head size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompare Price Per Carat, Not Just Total Price\u003c\/strong\u003e\u003cbr\u003eDivide the asking price by the carat weight before comparing listings. Price per carat is the figure that makes stones of different sizes comparable, and it is the one to benchmark against other GIA-documented Sri Lankan sapphires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAsk About Setting Compatibility\u003c\/strong\u003e\u003cbr\u003eIf this stone is destined for an engagement ring, discuss prong height and metal choice with your jeweler before setting. Mohs 9 measures scratch resistance rather than resistance to a knock; GIA's report lists corundum's toughness as excellent, but a step-cut pavilion still needs its edges protected.\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-fr\/blogs\/information-pages-complete-guide\/blue-sapphire-buyers-guide\"\u003eBlue Sapphire — The Complete Buyer's Guide to Color, Origin, and Value\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-fr\/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-fr\/blogs\/information-pages-complete-guide\/how-sapphire-heat-treatment-works\"\u003eHow Sapphire Heat Treatment Works — Temperature, Process, and What Changes Inside the Stone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-fr\/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-fr\/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? Cut, Color, and What to Know Before You Buy\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-fr\/blogs\/information-pages-complete-guide\/blue-sapphire-engagement-ring-guide-what-every-buyer-should-know-before-purchasing\"\u003eBlue Sapphire Engagement Ring Guide: What Every Buyer Should Know Before Purchasing\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;\"\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;\"\u003eCG8457\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eCarat Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e1.75 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eSpecies\/Variety\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eCorundum \/ Blue 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; width: 42%;\"\u003eShape\/Cut\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eRound — Modified Brilliant Cut crown, Step Cut pavilion (a mixed 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; width: 42%;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e6.57 - 6.78 x 5.07 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; width: 42%;\"\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; width: 42%;\"\u003ePhenomenon\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eTreatment\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eHeated (GIA Sapphire Origin Report #2243032036)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eSri Lanka — GIA geographic origin opinion, per the report's printed disclaimer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eClarity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eEye Clean — our own assessment; 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; width: 42%;\"\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; width: 42%;\"\u003eHardness\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e9 on the Mohs scale — scratch resistance; a corundum species constant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; font-weight: 600; width: 42%;\"\u003eCertification\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px;\"\u003eGIA Sapphire Origin Report #2243032036\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Choose this Round Ceylon Blue Sapphire?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003eA round outline sets easily, and at 1.75 carats and 6.57 - 6.78 mm across this stone suits a ring or a pendant without a bespoke head. What the GIA report gives you beyond that is unusual for the price: the color call, the two cutting styles, the heating, and a geographic origin opinion, all on one document you can check yourself.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Benefits of this Natural Blue Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSri Lankan Origin, as GIA's Opinion\u003c\/strong\u003e\u003cbr\u003eGIA Sapphire Origin Report #2243032036 gives Sri Lanka as the geographic origin, and records the weight, measurements, color, cutting styles and heating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRound Outline, Mixed Cut\u003c\/strong\u003e\u003cbr\u003eA Modified Brilliant Cut crown over a Step Cut pavilion, as recorded on the report, in a round outline that sets easily in rings, pendants and earrings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor Recorded as Blue\u003c\/strong\u003e\u003cbr\u003eThe report's color call is Blue. GIA grades no saturation or tone on a colored-stone report, so that is the whole of what the document says about color.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeated, and Recorded as Such\u003c\/strong\u003e\u003cbr\u003eAdditional Results on GIA Report #2243032036 reads Heated. Heating is routine in the sapphire trade; the document is what puts this stone's status beyond argument.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHard-Wearing\u003c\/strong\u003e\u003cbr\u003eCorundum is 9 on the Mohs scale, which measures scratch resistance. GIA's report lists corundum's toughness as excellent — that is the property that matters for a knock.\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: 1.75 Carats\u003c\/li\u003e\n\u003cli\u003eGem Type: Natural Blue Sapphire\u003c\/li\u003e\n\u003cli\u003eCut: Round — Modified Brilliant Cut crown, Step Cut pavilion (a mixed cut)\u003c\/li\u003e\n\u003cli\u003eDimensions: 6.57 - 6.78 x 5.07 mm\u003c\/li\u003e\n\u003cli\u003eOrigin: Sri Lanka — GIA geographic origin opinion\u003c\/li\u003e\n\u003cli\u003eTreatment: Heated (GIA Sapphire Origin Report #2243032036)\u003c\/li\u003e\n\u003cli\u003eColor: Blue\u003c\/li\u003e\n\u003cli\u003eClarity: Eye-clean — no visible inclusions under normal viewing — our own assessment, not a GIA grade\u003c\/li\u003e\n\u003cli\u003eCertification: GIA Sapphire Origin Report #2243032036\u003c\/li\u003e\n\u003cli\u003eHardness: 9 on the Mohs scale — scratch resistance; a corundum species constant\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eCare of Your Ceylon Blue Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eClean with lukewarm water and mild soap using a soft brush\u003c\/li\u003e\n\u003cli\u003eStore separately to avoid surface contact\u003c\/li\u003e\n\u003cli\u003eRemove before heavy physical activity\u003c\/li\u003e\n\u003cli\u003eAvoid ultrasonic or steam cleaners\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eGIA Sapphire Origin Report #2243032036\u003c\/li\u003e\n\u003cli\u003eGemstone packed in a gem sleeve\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003ePerfect Uses for this 1.75 ct Ceylon Blue Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eSapphire engagement ring center stone\u003c\/li\u003e\n\u003cli\u003eStatement pendant or solitaire necklace\u003c\/li\u003e\n\u003cli\u003eCollectors of GIA-documented Ceylon blue sapphires\u003c\/li\u003e\n\u003cli\u003eSignificant anniversary or milestone commission\u003c\/li\u003e\n\u003cli\u003eSeptember birthstone gift\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":43488624279619,"sku":"CG8457","price":2521.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/8457001.jpg?v=1783090229","url":"https:\/\/crescentgems.com\/en-fr\/products\/1-75-ct-round-ceylon-blue-sapphire-heat-treated-gia","provider":"Crescent Gems","version":"1.0","type":"link"}