{"product_id":"0-36-ct-cushion-untreated-yellow-sapphire-gemstone","title":"0.36 ct Natural Unheated Yellow Sapphire – Square Cushion Cut | AGCL Certified | Sri Lanka (Ceylon)","description":"\u003cp\u003eA natural 0.36 carat yellow sapphire in a square cushion cut, completely unheated, documented on AGCL Report #M262739. At sub-half-carat weight in a cushion format, this stone is sized for stackable rings, accent jewelry, and earring applications where a small, warm yellow creates a concentrated color point without requiring significant carat weight. Unheated status at this size is uncommon — most commercial sub-half-carat yellow sapphires are heat-treated. Natural color at 0.36 carats represents the rarest form of this hue at an accessible weight.\u003c\/p\u003e\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=\"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\"This 0.36 ct stone is a good example of how uncommon unheated color gets once you drop below half a carat — most yellow sapphire this small on the market has been heat-treated to even out the tone, and this one didn't need it. The square cushion cut holds the color well even at this scale.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eRarity Analysis\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eSeveral factors combine to make this a genuinely uncommon stone at this weight:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Natural golden yellow, unmodified by heat treatment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e At 0.36 ct, most commercial yellow sapphires this small are routinely heated — unheated material at sub-half-carat weight is rarely offered with individual lab certification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreatment:\u003c\/strong\u003e AGCL Report #M262739 confirms no indication of heating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut:\u003c\/strong\u003e The square cushion shape concentrates color return in a small stone, an advantage at sub-half-carat weights where saturation can otherwise look thin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocumentation:\u003c\/strong\u003e Independently lab-certified by AGCL, with weight, dimensions, and treatment status confirmed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombined effect:\u003c\/strong\u003e unheated, certified color at this small a size is not the norm — most yellow sapphire this size on the market has been heat-treated.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eBuying Guidance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eA few practical points to weigh before purchasing this specific stone:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizing for setting:\u003c\/strong\u003e at 3.98 x 3.98 mm, this stone suits accent, stacking, or earring settings rather than a large solitaire — confirm mm dimensions against your setting's stone seat before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompare against heated alternatives:\u003c\/strong\u003e heated yellow sapphires of similar size are more common and typically less expensive; this stone carries a premium specifically for its unheated status.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJyotish buyers:\u003c\/strong\u003e if using for Vedic astrological purposes, confirm with your astrologer whether 0.36 ct meets the recommended minimum weight for your use case.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e keep the AGCL report with the stone; it is the primary documentation of treatment status.\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\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=\"https:\/\/crescentgems.com\/blogs\/information-pages-complete-guide\/yellow-sapphire-buyers-guide\"\u003eYellow 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 Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/crescentgems.com\/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=\"https:\/\/crescentgems.com\/blogs\/information-pages-complete-guide\/cushion-cut-sapphire-guide\"\u003eCushion Cut Sapphire Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/crescentgems.com\/blogs\/information-pages-complete-guide\/sapphire-buying-guide\"\u003eSapphire Buying Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/crescentgems.com\/blogs\/information-pages-complete-guide\/buying-sapphires-for-jyotish-vedic-astrology\"\u003eBuying Sapphires for Jyotish (Vedic Astrology)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\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;\"\u003eCG8390\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;\"\u003e0.36 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 Corundum — Yellow 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 \/ Cut\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eSquare Cushion, Mixed Brilliant\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;\"\u003e3.98 x 3.98 x 2.63 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 \/ Intensity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eGolden yellow\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;\"\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;\"\u003eTreatment\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eUnheated — No Indication of Heating per AGCL Report #M262739\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) (store's own assessment; not addressed by the AGCL report)\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 — no visible inclusions under normal viewing\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;\"\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;\"\u003eAGCL Report #M262739\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Choose this 0.36 ct Unheated Cushion Yellow Sapphire?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eSub-half-carat unheated yellow sapphire in a cushion cut is the format for buyers who want natural color in the smallest practical jewelry size — for Jyotish use at a lighter weight, for accent jewelry, or for collectors who want unheated quality across a range of sizes. The cushion cut concentrates the yellow saturation in even a small stone.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Benefits of this Natural Yellow Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnheated Natural Yellow\u003c\/strong\u003e\u003cbr\u003eNo thermal treatment — rare at sub-half-carat weight in yellow sapphire.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCushion Cut Saturation\u003c\/strong\u003e\u003cbr\u003eThe cushion geometry concentrates yellow even in a small stone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessible Small Weight\u003c\/strong\u003e\u003cbr\u003e0.36 carats for earring accents, stackable rings, and small jewelry applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJyotish-Suitable\u003c\/strong\u003e\u003cbr\u003eUnheated natural yellow sapphire (Pukhraj) for Vedic astrological use at smaller carat weights.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable for Daily Wear\u003c\/strong\u003e\u003cbr\u003eCorundum at Mohs 9, second only to diamond.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCarat Weight: 0.36 Carats\u003c\/li\u003e\n\u003cli\u003eGem Type: Natural Yellow Sapphire\u003c\/li\u003e\n\u003cli\u003eShape: Square Cushion\u003c\/li\u003e\n\u003cli\u003eCut Style: Mixed Brilliant\u003c\/li\u003e\n\u003cli\u003eTreatment: Unheated — No Indication of Heating per AGCL Report #M262739\u003c\/li\u003e\n\u003cli\u003eColor: Yellow\u003c\/li\u003e\n\u003cli\u003eClarity: Eye-clean — no visible inclusions under normal viewing\u003c\/li\u003e\n\u003cli\u003eTransparency: Transparent\u003c\/li\u003e\n\u003cli\u003eOrigin: Sri Lanka (Ceylon) (store's own assessment; not addressed by the AGCL report)\u003c\/li\u003e\n\u003cli\u003eCertification: AGCL Report #M262739\u003c\/li\u003e\n\u003cli\u003eHardness: 9 on the Mohs scale\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis 0.36 ct unheated cushion yellow sapphire has been hand-selected for the brightness of its yellow — natural color at a size where unheated quality is genuinely uncommon.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Customers Love This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnheated at Small Size:\u003c\/strong\u003e Natural yellow at a weight where most commercial stones are heat-treated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCushion Warmth:\u003c\/strong\u003e The cushion concentrates yellow saturation even at this compact weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJyotish-Ready:\u003c\/strong\u003e Unheated Pukhraj at a lighter, accessible weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted Source:\u003c\/strong\u003e Treatment disclosed honestly, stone selected for color quality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOwning this 0.36 ct unheated cushion yellow sapphire means choosing a small stone with a natural color that most commercial alternatives at this weight cannot match.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003ePerfect Uses for this 0.36 ct Yellow Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eStackable ring center stone\u003c\/li\u003e\n\u003cli\u003eEarring accent (pair)\u003c\/li\u003e\n\u003cli\u003eJyotish \/ Vedic astrological use (light-weight Pukhraj)\u003c\/li\u003e\n\u003cli\u003eSmall pendant accent\u003c\/li\u003e\n\u003cli\u003eCollectors of small unheated yellow sapphires\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":43009082032195,"sku":"CG8390","price":127.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/1112023001_54b0caaa-7080-49a0-9c20-22e4fe7aa27f.jpg?v=1778308053","url":"https:\/\/crescentgems.com\/en-ca\/products\/0-36-ct-cushion-untreated-yellow-sapphire-gemstone","provider":"Crescent Gems","version":"1.0","type":"link"}