{"product_id":"oval-flat-top-double-bevel-black-onyx-cabochons-9x7-16x12mm","title":"Oval Flat Top Double 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 tiny quartz crystals that are 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 shiny black color. Black Onyx is the top-selling chalcedony in the jewelry market and was a hallmark gemstone of Art Deco design. These oval flat top double bevel cabochons feature uniform opaque black color, making them an ideal choice for setting in rings, pendants, bracelets, and other fine jewelry applications.\u003c\/p\u003e\u003cp\u003eCare is straightforward: 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 cabochons — dyed black chalcedony\u003c\/li\u003e\n\u003cli\u003eOval flat top with double bevel profile\u003c\/li\u003e\n\u003cli\u003eUniform opaque black color throughout\u003c\/li\u003e\n\u003cli\u003eChemically dyed to achieve consistent shiny black appearance\u003c\/li\u003e\n\u003cli\u003eClassic gemstone choice for Art Deco-inspired and contemporary jewelry designs\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\u003eShape\u003c\/th\u003e\n\u003ctd\u003eOval Flat Top Double 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\u003eColor\u003c\/th\u003e\n\u003ctd\u003eUniform Opaque Black\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\u003eCare\u003c\/th\u003e\n\u003ctd\u003eWarm soapy water; ultrasonic and steam cleaners generally safe\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\u003e947-841\u003c\/td\u003e\n\u003ctd\u003e9x7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-842\u003c\/td\u003e\n\u003ctd\u003e12x10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-843\u003c\/td\u003e\n\u003ctd\u003e14x12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-844\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":47551857918166,"sku":"947-841","price":3.48,"currency_code":"USD","in_stock":true},{"title":"12x10mm","offer_id":47551857950934,"sku":"947-842","price":3.9,"currency_code":"USD","in_stock":false},{"title":"14x12mm","offer_id":47551857983702,"sku":"947-843","price":4.0,"currency_code":"USD","in_stock":false},{"title":"16x12mm","offer_id":47551858016470,"sku":"947-844","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/oval-flat-top-double-bevel-genuine-black-onyx-otto-frei.jpg?v=1719954473","url":"https:\/\/www.ottofrei.com\/products\/oval-flat-top-double-bevel-black-onyx-cabochons-9x7-16x12mm","provider":"Otto Frei","version":"1.0","type":"link"}