{"product_id":"gia-certificate-20-05ct-alexandrite-cat-s-eye-rare-collection-gemstone-wbgem-e065","title":"GIA Certificate 20.05ct Alexandrite Cat’s Eye rare collection Gemstone Wbgem E065","description":"\u003cp\u003e\u003cspan\u003eIn the upper echelons of gemology, some stones are rare, while others are legendary. We are honored to present a true \"unicorn\" of the mineral kingdom: a 20.05-carat Natural Cat’s-Eye Alexandrite. This specimen is not merely a gemstone; it is a masterclass in the complexity of nature, possessing two of the world's most sought-after optical phenomena in a single, massive crystal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis extraordinary chrysoberyl exhibits a \"dual phenomenon\" that places it among the rarest objects on Earth. First is the \"Alexandrite Effect\"—the remarkable ability to change color from a sophisticated yellowish-green in daylight to a warm, resonant yellowish-brown under incandescent light. Intersecting this color shift is \"Chatoyancy,\" or the cat’s-eye effect. A sharp, luminous band of light tracks across the stone’s surface, a result of perfectly aligned needle-like inclusions within the 20-carat volume.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhile fine Alexandrite is typically found in sizes under one or two carats, this stone commands a staggering 20.05 carats. Its dimensions—13.72 x 13.37 mm—give it a presence that is impossible to ignore. The double cabochon cut was specifically engineered to maximize the depth of the color change while providing the necessary curvature for the cat's-eye to \"wink\" with every gesture of the hand.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA gem of this magnitude requires a vessel of equal prestige. The stone is securely cradled in a handcrafted Pt900 Platinum mounting. Flanking the center stone is a structural arrangement of 1.75 carats of high-grade diamonds, which provide a brilliant, icy contrast to the shifting hues of the Alexandrite.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor the connoisseur, this stone represents a strategic asset. Alexandrite is consistently among the most valuable gemstones in the world due to the exhaustion of classic mines and the increasing global demand for phenomenal stones. A 20-carat specimen, particularly one displaying both a sharp \"eye\" and a distinct color change, is a legacy piece suitable for the world’s most prestigious private collections or institutional displays.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis masterpiece is accompanied by GIA Report 6542519372, providing the global gold standard of assurance. The report confirms its identity as a Natural Cat's-Eye Alexandrite, ensuring its pedigree and natural origin\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e are documented by the world's foremost authority in gemology.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis is a rare opportunity to own a piece of Earth's history. It is a stone for the individual who demands the unique, the impossible, and the incomparable. It is, quite simply, one of the most significant phenomenal gemstones available on the market today.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e1-Main stone : \u003cbr\u003e20.05ct Alexandrite Cat’s Eye \u003c\/p\u003e\n\u003cp\u003e2-Surround stone: \u003cbr\u003eNatural Diamond: 1.75ct\u003c\/p\u003e\n\u003cp\u003e4-Jewelry: \u003cbr\u003ePT900 Gold\u003cbr\u003eWeight : 16.9Gram \u003cbr\u003eRing size 13# \u003cbr\u003eCertificate: GIA\u003c\/p\u003e","brand":"WB Gem","offers":[{"title":"Default Title","offer_id":51871660638498,"sku":"E065","price":57000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/7051\/4210\/files\/Natural_20.05ct_Cat_s-Eye_Alexandrite_GIA_Certified_Rare_Ring.jpg?v=1782628513","url":"https:\/\/wbgem.com\/zh\/products\/gia-certificate-20-05ct-alexandrite-cat-s-eye-rare-collection-gemstone-wbgem-e065","provider":"WB Gem","version":"1.0","type":"link"}