{"product_id":"cushion-buff-top-double-bevel-black-onyx-cabochon-with-hole","title":"Cushion Buff Top Double Bevel Genuine Black Onyx With Hole","description":"\u003cp\u003eBlack Onyx, also known as black agate, is dyed black chalcedony. 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, uniform black color. Black Onyx has long been one of the top-selling chalcedony gemstones and was a hallmark material in Art Deco jewelry design. These genuine cabochons feature a cushion buff-top double-bevel cut with a pre-drilled hole, making them well suited for a wide range of jewelry fabrication 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 double-bevel cut profile\u003c\/li\u003e\n\u003cli\u003ePre-drilled hole for easy setting or stringing\u003c\/li\u003e\n\u003cli\u003eUniform opaque black color throughout\u003c\/li\u003e\n\u003cli\u003eRich history in Art Deco and fine jewelry traditions\u003c\/li\u003e\n\u003cli\u003eCare: Clean with warm, soapy water; ultrasonic and steam cleaning are 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\u003eColor\u003c\/th\u003e\n\u003ctd\u003eUniform opaque black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCut\u003c\/th\u003e\n\u003ctd\u003eCushion buff-top double bevel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003ctd\u003eWith hole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCleaning\u003c\/th\u003e\n\u003ctd\u003eWarm soapy water; ultrasonic and steam cleaning are generally safe\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\u003e947-463\u003c\/td\u003e\n\u003ctd\u003e14mm x 12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-464\u003c\/td\u003e\n\u003ctd\u003e16mm x 12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"14mmx12mm","offer_id":43834358038742,"sku":"947-463","price":5.32,"currency_code":"USD","in_stock":false},{"title":"16mmx12mm","offer_id":43834358071510,"sku":"947-464","price":6.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/cushion-buff-top-double-bevel-genuine-black-onyx-with-hole-otto-frei.jpg?v=1719954518","url":"https:\/\/www.ottofrei.com\/products\/cushion-buff-top-double-bevel-black-onyx-cabochon-with-hole","provider":"Otto Frei","version":"1.0","type":"link"}