{"product_id":"1-67ct-aigs-certified-natural-alexandrite-cat-s-eye-color-change-srilanka-gemstone-wbgem-axa33","title":"1.67ct AIGS certified Natural Alexandrite cat’s eye color change Srilanka gemstone Wbgem AXA33","description":"\u003cdiv class=\"gemstone-description\"\u003e\n\u003cp\u003eRepresenting one of nature's rarest optical phenomena, this \u003cstrong\u003e1.67-carat Natural Alexandrite Cat's Eye\u003c\/strong\u003e combines both dramatic color change and sharp, centered chatoyancy. Sourced from the historic gem-bearing gravels of Sri Lanka (Ceylon), this exceptional specimen of phenomenal chrysoberyl transitions effortlessly from a delicate greenish-gray in natural daylight or fluorescent lighting to a rich purplish-red under warm incandescent illumination.\u003c\/p\u003e\n\u003cp\u003eCut into a perfectly domed round cabochon with an excellent polish, the gem displays a razor-sharp, luminous cat's eye band that glides smoothly across the surface as the light moves. Completely untreated with zero thermal or artificial enhancements, this collector-grade gem is certified by the prestigious \u003cstrong\u003eAsian Institute of Gemological Sciences (AIGS)\u003c\/strong\u003e confirming its natural identity and Ceylon provenance. A trophy gemstone destined for an extraordinary bespoke signet ring, pendant, or private connoisseur collection.\u003c\/p\u003e\n\u003ch3\u003eGemstone Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 15px; margin-bottom: 20px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"border-bottom: 1px solid #e5e5e5;\"\u003e\n\u003ctd style=\"padding: 10px 8px; font-weight: 600; width: 35%;\"\u003eSpecies\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 8px;\"\u003eNatural Chrysoberyl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e5e5e5;\"\u003e\n\u003ctd style=\"padding: 10px 8px; font-weight: 600;\"\u003eVariety\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 8px;\"\u003eNatural Alexandrite Cat's Eye (Phenomenal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e5e5e5;\"\u003e\n\u003ctd style=\"padding: 10px 8px; font-weight: 600;\"\u003eCarat Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 8px;\"\u003e1.67 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e5e5e5;\"\u003e\n\u003ctd style=\"padding: 10px 8px; font-weight: 600;\"\u003eColor \u0026amp; Color-Change\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 8px;\"\u003eGreenish-Gray (Daylight) to Purplish-Red (Incandescent Light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e5e5e5;\"\u003e\n\u003ctd style=\"padding: 10px 8px; font-weight: 600;\"\u003ePhenomenon\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 8px;\"\u003eChatoyancy (Sharp, well-defined cat's eye effect)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e5e5e5;\"\u003e\n\u003ctd style=\"padding: 10px 8px; font-weight: 600;\"\u003eClarity\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 8px;\"\u003eSlight VVS (Ultra-fine parallel rutile silk responsible for clean chatoyancy; exceptional crystal transparency)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e5e5e5;\"\u003e\n\u003ctd style=\"padding: 10px 8px; font-weight: 600;\"\u003eCutting \u0026amp; Shape\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 8px;\"\u003eRound High-Dome Cabochon (Excellent Polish)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e5e5e5;\"\u003e\n\u003ctd style=\"padding: 10px 8px; font-weight: 600;\"\u003eEnhancement \/ Treatment\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 8px;\"\u003e\u003cstrong\u003eNo Indications of Treatment (100% Natural \u0026amp; Untreated)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e5e5e5;\"\u003e\n\u003ctd style=\"padding: 10px 8px; font-weight: 600;\"\u003eGeographic Origin\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 8px;\"\u003eSri Lanka (Ceylon)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e5e5e5;\"\u003e\n\u003ctd style=\"padding: 10px 8px; font-weight: 600;\"\u003eLaboratory Report\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 8px;\"\u003eAIGS (Asian Institute of Gemological Sciences) Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eThe Dual Phenomenon: Chatoyancy Meets Color Change\u003c\/h3\u003e\n\u003cp\u003eWhile traditional chrysoberyl cat's eyes and faceted alexandrites are each prized worldwide, the simultaneous occurrence of both phenomena in a single natural gem termed an Alexandrite Cat's Eye is exceedingly uncommon. To manifest this dual effect, the crystal requires trace amounts of chromium to trigger the pleochroic color shift alongside dense, microscopic parallel rutile needles precisely oriented perpendicular to the cabochon dome.\u003c\/p\u003e\n\u003ch3\u003eCustom Fine Jewelry Commission\u003c\/h3\u003e\n\u003cp\u003eThis exceptional loose gem is ready for immediate addition to an investment portfolio or can be mounted into a custom jewelry masterpiece. Speak with our master jeweler to engineer a bespoke 18K yellow gold, rose gold, or platinum setting crafted to accentuate both its chatoyant ray and dramatic color transition.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"WB Gem","offers":[{"title":"Default Title","offer_id":67535086780706,"sku":"AXA33","price":1300.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/7051\/4210\/files\/sri_lankan_color_change_chrysoberyl.jpg?v=1792323163","url":"https:\/\/wbgem.com\/products\/1-67ct-aigs-certified-natural-alexandrite-cat-s-eye-color-change-srilanka-gemstone-wbgem-axa33","provider":"WB Gem","version":"1.0","type":"link"}