{"product_id":"8-09-ct-aaa-grade-blue-ceylon-star-sapphire-unheated","title":"8.09 ct Natural Unheated Blue Star Sapphire – Cabochon Cut | GIA Certified | Sri Lanka (Ceylon)","description":"\u003cp\u003eAn exceptional 8.09 ct Blue Ceylon Star Sapphire from Sri Lanka (Ceylon), completely unheated, with a GIA Sapphire Origin Report (#2233980218). This stone displays a six-rayed asterism — a sharp, silver-white star that crosses the center of the cabochon dome when the stone is illuminated by a single directional light source. The blue body color is the classical, most sought-after color for star sapphires, and at 8.09 carats, the star is visible at full room-length viewing distance. Among the rarest combinations in the phenomenon gemstone market: large size, Ceylon origin, unheated, and GIA documentation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: rgb(195, 9, 9)\"\u003e\u003cstrong\u003eSTAR WILL ONLY BE SEEN UNDER DIRECT SUNLIGHT OR FLASHLIGHT.\u003c\/strong\u003e\u003c\/span\u003e\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\u003ch3 style=\"margin-top: 0; margin-bottom: 12px; color: #4a235a;\"\u003eExpert Opinion\u003c\/h3\u003e\n\u003cp style=\"font-weight: 600; margin-bottom: 6px;\"\u003e\u003ca href=\"https:\/\/crescentgems.com\/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\"An 8+ carat unheated blue star sapphire with a sharp, GIA-confirmed six-ray star and GIA-confirmed Ceylon origin is a genuinely rare combination — stones that bring together this size, this star quality, and full GIA origin documentation come along only a handful of times a year. This is the flagship phenomenon stone in this batch.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eRarity Analysis\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA True Phenomenon Gem:\u003c\/strong\u003e The asterism itself is the primary rarity driver here — a sharp, complete six-ray star (GIA-confirmed) requires a very specific density and alignment of fibrous rutile \"silk\" inclusions formed during the corundum's growth, a combination nature produces far less often than the clean material used for standard faceted sapphires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional Size:\u003c\/strong\u003e At 8.09 carats, this stone is large for any star sapphire — let alone one with GIA-confirmed Ceylon origin. Fine star sapphires of this scale, with strong asterism intact, are uncommon at any price point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnheated Status:\u003c\/strong\u003e The majority of sapphires on the market today are heat-treated, and heating is generally understood to risk disrupting the fine rutile silk responsible for asterism. An unheated stone with a strong, sharp star intact is independently rare — this stone carries GIA confirmation of no indications of heating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIA Origin Report Confirms Both Origin and Phenomenon:\u003c\/strong\u003e A single GIA Sapphire Origin Report (#2233980218) verifying Ceylon origin AND the six-ray asterism is a genuine differentiator — most phenomenon stones in the market carry no such combined, independent documentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClassic Blue Color:\u003c\/strong\u003e Blue is the most traditional and historically prized star sapphire color, adding to the stone's collectibility alongside its rarity in size, treatment, and phenomenon.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombined Effect:\u003c\/strong\u003e The convergence of a sharp, GIA-confirmed six-ray star, 8+ carat size, unheated status, confirmed Ceylon origin, and classic blue color in a single stone places this piece among the rarest tiers of the star sapphire market.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eBuying Guidance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eViewing Conditions Matter:\u003c\/strong\u003e This star is only visible under a single directional light source — direct sunlight or a flashlight beam. Under diffuse indoor lighting the star will not appear; this is expected behavior for all star sapphires, not a flaw specific to this stone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJudge Star Quality Carefully:\u003c\/strong\u003e Look for sharpness, centering, and completeness of all six rays — a star that is faint, off-center, or missing rays is lower quality than one with a crisp, complete, well-centered asterism like this stone's.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTranslucency Is Normal:\u003c\/strong\u003e Cabochon-cut phenomenon stones are translucent by nature — the very rutile silk structure that produces the star also scatters light through the stone. This is expected for a stone of this type, not a clarity defect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify Natural Origin:\u003c\/strong\u003e Confirm any star sapphire is natural — not synthetic, diffusion-treated, or assembled\/foil-backed to imitate a star — through independent lab documentation. This stone's GIA Sapphire Origin Report confirms it is natural, unheated, and Ceylon in origin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTry Before You Buy:\u003c\/strong\u003e Because the star's appearance depends entirely on lighting conditions, we recommend using our Try-On service to see the asterism in your own hand and light before committing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eLearn More About This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/crescentgems.com\/blogs\/information-pages-complete-guide\/star-sapphire-complete-buyers-guide\"\u003eStar Sapphire Complete Buyer's Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/crescentgems.com\/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=\"https:\/\/crescentgems.com\/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=\"https:\/\/crescentgems.com\/blogs\/information-pages-complete-guide\/what-is-an-unheated-sapphire\"\u003eUnheated Sapphire Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/crescentgems.com\/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=\"https:\/\/crescentgems.com\/pages\/ceylon-sapphire-origin-guide\"\u003eCeylon Sapphire Origin Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/crescentgems.com\/blogs\/information-pages-complete-guide\/custom-sapphire-rings\"\u003eCustom Sapphire Ring Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/crescentgems.com\/pages\/best-sapphires-under-10000\"\u003eBest Sapphires Under $10,000\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\u003ch3 style=\"margin-top: 0; margin-bottom: 14px; color: #4a235a;\"\u003eGemstone Data — At a Glance\u003c\/h3\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;\"\u003eCG8440\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;\"\u003e8.09 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;\"\u003eSpecies \/ Variety\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNatural Blue Star Sapphire (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;\"\u003eShape \/ Cut\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eOval, Double Cabochon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e12.84 × 10.37 × 5.96 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;\"\u003ePhenomenon\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eSix-ray asterism, GIA-confirmed\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;\"\u003eUnheated — No 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;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eSri Lanka (Ceylon), GIA confirmed\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;\"\u003eTranslucent\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)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; font-weight: 600;\"\u003eCertification\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px;\"\u003eGIA Sapphire Origin Report #2233980218\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Choose this 8.09 ct Blue Ceylon Star Sapphire?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cp\u003eLarge blue star sapphires above 5 carats in unheated quality from Ceylon with GIA documentation represent the premium tier of star sapphire collecting. At 8.09 carats, the star has the scale to command any jewelry piece it is set in, and the GIA report (#2233980218) confirms the weight, dimensions, treatment status (unheated), and origin. The blue body color is the traditional, classic star sapphire color prized since antiquity.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Benefits of this Natural Star Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnheated Ceylon Origin\u003c\/strong\u003e\u003cbr\u003eNo thermal treatment — the asterism and body color are entirely natural. GIA report #2233980218 confirms treatment status and origin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSharp Six-Ray Asterism\u003c\/strong\u003e\u003cbr\u003eA complete, sharp six-rayed silver star visible under any single directional light source.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional 8+ Carat Size\u003c\/strong\u003e\u003cbr\u003eThe asterism is visible at room distance at this scale — a commanding statement stone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlue Body Color\u003c\/strong\u003e\u003cbr\u003eThe classic, most traditional star sapphire color — timeless and instantly recognizable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness: 9 on the Mohs scale\u003c\/strong\u003e\u003cbr\u003eCorundum durability appropriate for any jewelry application.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eCarat Weight: 8.09 Carats\u003c\/li\u003e\n\u003cli\u003eGem Type: Natural Blue Star Sapphire\u003c\/li\u003e\n\u003cli\u003eVariety: Blue Star Sapphire\u003c\/li\u003e\n\u003cli\u003eDimensions: 12.84 x 10.37 x 5.96 mm (per GIA report)\u003c\/li\u003e\n\u003cli\u003eShape: Oval\u003c\/li\u003e\n\u003cli\u003eCut Style: Double Cabochon\u003c\/li\u003e\n\u003cli\u003eOrigin: Sri Lanka (Ceylon), confirmed by GIA\u003c\/li\u003e\n\u003cli\u003eTreatment: Unheated — No Indications of Heating (per GIA report)\u003c\/li\u003e\n\u003cli\u003eColor: Blue\u003c\/li\u003e\n\u003cli\u003ePhenomenon: Six-ray asterism, confirmed by GIA — visible under direct single-source light only\u003c\/li\u003e\n\u003cli\u003eTransparency: Translucent (per GIA report)\u003c\/li\u003e\n\u003cli\u003eCertification: GIA (Gemological Institute of America), Sapphire Origin Report #2233980218\u003c\/li\u003e\n\u003cli\u003eHardness: 9 on the Mohs scale\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOne of a Kind\u003c\/h3\u003e\n\n\u003cp\u003eThis is a natural, untreated gemstone — no two star sapphires display exactly the same star, body color, and dome geometry, and once this stone is sold it cannot be reordered or reproduced.\u003c\/p\u003e\n\n\u003ch3\u003eCare of Blue Ceylon Star Sapphire\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eClean with lukewarm water and mild soap using a soft brush\u003c\/li\u003e\n\u003cli\u003eRemove before heavy physical activity, sports, or manual work\u003c\/li\u003e\n\u003cli\u003eAvoid ultrasonic or steam cleaners\u003c\/li\u003e\n\u003cli\u003eStore separately from other jewelry to protect the domed surface from scratching\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis 8.09 ct Blue Ceylon Star Sapphire has been hand-selected for the sharpness and centering of its six-ray star and the evenness of its blue body — the two qualities that define a premium star sapphire at any size.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Customers Love This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIA-Confirmed Unheated:\u003c\/strong\u003e Independent documentation of treatment status and origin (Report #2233980218).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8+ Carat Scale:\u003c\/strong\u003e Large enough that the star reads clearly at any wearing distance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClassic Blue Color:\u003c\/strong\u003e The traditional, most recognized star sapphire color.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted Source:\u003c\/strong\u003e Ceylon origin, untreated, every attribute disclosed honestly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOwning this 8.09 ct unheated Ceylon blue star sapphire means investing in a phenomenon gemstone at the scale and specification where collecting and fine jewelry converge.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003ePerfect Uses for this 8.09 ct Blue Star Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eStatement pendant — star visible in motion\u003c\/li\u003e\n\u003cli\u003eLarge collector or display piece\u003c\/li\u003e\n\u003cli\u003eGentleman's ring center stone at statement scale\u003c\/li\u003e\n\u003cli\u003eInvestment in premium Ceylon star sapphire with GIA documentation\u003c\/li\u003e\n\u003cli\u003eAstrological or spiritual jewelry at meaningful weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFree US shipping; Try-On available.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eItem #: CG8440 | GIA Report #: 2233980218\u003c\/em\u003e\u003c\/p\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","url":"https:\/\/crescentgems.com\/products\/8-09-ct-aaa-grade-blue-ceylon-star-sapphire-unheated","provider":"Crescent Gems","version":"1.0","type":"link"}