{"product_id":"cushion-buff-top-single-bevel-black-onyx-cabochon-with-hole-12-14mm","title":"Onyx noir véritable coussin, bombé, à biseau simple, avec trou","description":"\u003cp\u003e\u003cstrong\u003eBlack Onyx, also known as black agate, is dyed black chalcedony.\u003c\/strong\u003e Chalcedony is composed of tiny 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, shiny black color. Black Onyx is the top-selling chalcedony in the jewelry market and has a rich history in Art Deco design. These cushion buff top, single bevel cabochons feature a drilled hole and uniform opaque black color, making them well-suited for pendants, earrings, and other fabricated jewelry applications.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\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\u003eDrilled hole for easy setting or stringing\u003c\/li\u003e\n\u003cli\u003eUniform opaque black color throughout\u003c\/li\u003e\n\u003cli\u003eHistorically popular in Art Deco jewelry styles\u003c\/li\u003e\n\u003cli\u003eClean with warm, soapy water — ultrasonic and steam cleaning generally safe\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\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\u003eTreatment\u003c\/th\u003e\n\u003ctd\u003eDyed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShape\u003c\/th\u003e\n\u003ctd\u003eCushion Buff Top, Single Bevel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003ctd\u003eDrilled hole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransparency\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 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\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eIndividual stone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eStone Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-452\u003c\/td\u003e\n\u003ctd\u003e12mm x 10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-453\u003c\/td\u003e\n\u003ctd\u003e14mm x 12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"12mmx10mm","offer_id":43834357874902,"sku":"947-452","price":7.5,"currency_code":"USD","in_stock":false},{"title":"14mmx12mm","offer_id":43834357907670,"sku":"947-453","price":6.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/cushion-buff-top-single-bevel-genuine-black-onyx-with-hole-otto-frei.jpg?v=1719954518","url":"https:\/\/www.ottofrei.com\/fr\/products\/cushion-buff-top-single-bevel-black-onyx-cabochon-with-hole-12-14mm","provider":"Otto Frei","version":"1.0","type":"link"}