{"product_id":"cushion-buff-top-single-bevel-genuine-black-onyx-cabochons","title":"Cushion Buff Top Single Bevel Genuine Black Onyx","description":"\u003cp\u003e\u003cstrong\u003eBlack Onyx, also known as black agate, is dyed black chalcedony.\u003c\/strong\u003e Chalcedony is composed of microscopic quartz crystals not visible to the naked eye. Natural black chalcedony is exceptionally rare — virtually all black chalcedony on the market is grey chalcedony that has been chemically treated to achieve its characteristic deep, lustrous black color. Black Onyx has long been one of the top-selling chalcedony stones in the jewelry market and was widely featured in Art Deco designs. These cushion buff top single bevel cabochons offer a uniform opaque black appearance, making them a versatile choice for rings, pendants, bracelets, and other fine jewelry settings.\u003c\/p\u003e\u003cp\u003eTo care for Black Onyx, clean with warm soapy water. Use of an ultrasonic or steam cleaner is generally considered safe for these stones.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGenuine Black Onyx (dyed black chalcedony)\u003c\/li\u003e\n\u003cli\u003eCushion buff top with single bevel profile\u003c\/li\u003e\n\u003cli\u003eUniform opaque black color throughout\u003c\/li\u003e\n\u003cli\u003eChemically dyed for consistent, deep black appearance\u003c\/li\u003e\n\u003cli\u003eSuitable for use in rings, pendants, earrings, and other jewelry settings\u003c\/li\u003e\n\u003cli\u003eSafe for ultrasonic and steam cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eStone Type\u003c\/th\u003e\n\u003ctd\u003eBlack Onyx (Dyed Black Chalcedony)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCut Style\u003c\/th\u003e\n\u003ctd\u003eCushion Buff Top, Single Bevel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTreatment\u003c\/th\u003e\n\u003ctd\u003eDyed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOpacity\u003c\/th\u003e\n\u003ctd\u003eOpaque\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eUniform Opaque Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCare\u003c\/th\u003e\n\u003ctd\u003eWarm soapy water; ultrasonic and steam cleaning generally safe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTags\u003c\/th\u003e\n\u003ctd\u003eCabochons, Genuine Cabochons, Resale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-410\u003c\/td\u003e\n\u003ctd\u003e12x10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-411\u003c\/td\u003e\n\u003ctd\u003e9x7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-412\u003c\/td\u003e\n\u003ctd\u003e14x10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-413\u003c\/td\u003e\n\u003ctd\u003e14x12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-414\u003c\/td\u003e\n\u003ctd\u003e16x12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"12x10mm","offer_id":47551856148694,"sku":"947-410","price":3.15,"currency_code":"USD","in_stock":false},{"title":"9x7mm","offer_id":47551856017622,"sku":"947-411","price":3.0,"currency_code":"USD","in_stock":true},{"title":"14x10mm","offer_id":47551856115926,"sku":"947-412","price":3.28,"currency_code":"USD","in_stock":false},{"title":"14x12mm","offer_id":47551856050390,"sku":"947-413","price":4.0,"currency_code":"USD","in_stock":true},{"title":"16x12mm","offer_id":47551856083158,"sku":"947-414","price":5.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/cushion-buff-top-single-bevel-genuine-black-onyx-otto-frei.jpg?v=1719954479","url":"https:\/\/www.ottofrei.com\/products\/cushion-buff-top-single-bevel-genuine-black-onyx-cabochons","provider":"Otto Frei","version":"1.0","type":"link"}