{"product_id":"oval-buff-top-single-bevel-black-onyx-cabochons-9x7-16x12mm","title":"Oval 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, uniform black color. Black Onyx is the top-selling chalcedony in the jewelry market and has a rich history of use in Art Deco jewelry design.\u003c\/p\u003e\u003cp\u003eThese oval buff top cabochons feature a single bevel cut and uniformly opaque black appearance, making them well suited for rings, pendants, brooches, and other classic settings. To clean, use warm soapy water. Ultrasonic and steam cleaning is generally considered safe for these stones.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGenuine black onyx cabochons — dyed black chalcedony\u003c\/li\u003e\n\u003cli\u003eOval buff top, single bevel cut\u003c\/li\u003e\n\u003cli\u003eUniform opaque black color throughout\u003c\/li\u003e\n\u003cli\u003eChemically treated to achieve consistent deep black color\u003c\/li\u003e\n\u003cli\u003eWell suited for Art Deco-inspired and classic jewelry settings\u003c\/li\u003e\n\u003cli\u003eSafe to clean with warm soapy water; ultrasonic and steam cleaning generally safe\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\u003c\/th\u003e\n\u003ctd\u003eOval buff top, single bevel\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\u003eTreatment\u003c\/th\u003e\n\u003ctd\u003eDyed\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\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eIndividual stone\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\u003e947-811\u003c\/td\u003e\n\u003ctd\u003e9x7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-812\u003c\/td\u003e\n\u003ctd\u003e12x10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-813\u003c\/td\u003e\n\u003ctd\u003e14x12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-814\u003c\/td\u003e\n\u003ctd\u003e16x12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"9x7mm","offer_id":47551857524950,"sku":"947-811","price":2.25,"currency_code":"USD","in_stock":true},{"title":"12x10mm","offer_id":47551857623254,"sku":"947-812","price":5.0,"currency_code":"USD","in_stock":true},{"title":"14x12mm","offer_id":47551857557718,"sku":"947-813","price":5.5,"currency_code":"USD","in_stock":true},{"title":"16x12mm","offer_id":47551857590486,"sku":"947-814","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/oval-buff-top-single-bevel-genuine-black-onyx-otto-frei.jpg?v=1719954474","url":"https:\/\/www.ottofrei.com\/products\/oval-buff-top-single-bevel-black-onyx-cabochons-9x7-16x12mm","provider":"Otto Frei","version":"1.0","type":"link"}