{"product_id":"cushion-flat-top-single-bevel-black-onyx-cabochon-with-hole-12-16mm","title":"Onyx noir véritable taille coussin, dessus plat, 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 crystals of quartz that are not visible to the naked eye. Natural black chalcedony is so rare that virtually all black chalcedony on the market is grey chalcedony that has been chemically treated to achieve its signature shiny black color. Black Onyx is the top-selling chalcedony in the jewelry market and was a staple material in Art Deco jewelry design. These cushion flat top single bevel stones feature a drilled hole and are offered in calibrated sizes, making them ideal for settings requiring consistent dimensions.\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 flat top with single bevel profile\u003c\/li\u003e\n\u003cli\u003ePre-drilled hole for design versatility\u003c\/li\u003e\n\u003cli\u003eUniform opaque black color throughout\u003c\/li\u003e\n\u003cli\u003eCalibrated sizes for consistent fit in standard settings\u003c\/li\u003e\n\u003cli\u003eTreatment: Dyed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eGenuine black onyx (dyed black chalcedony)\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\u003eShape\u003c\/th\u003e\n\u003ctd\u003eCushion flat top, single bevel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003ctd\u003ePre-drilled hole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSizing Type\u003c\/th\u003e\n\u003ctd\u003eCalibrated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCare\u003c\/th\u003e\n\u003ctd\u003eClean with warm, soapy water; ultrasonic and steam cleaning 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\u003eSize\u003c\/th\u003e\n\u003cth\u003eThickness\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-432\u003c\/td\u003e\n\u003ctd\u003e12x10mm\u003c\/td\u003e\n\u003ctd\u003e2.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-433\u003c\/td\u003e\n\u003ctd\u003e14x12mm\u003c\/td\u003e\n\u003ctd\u003e2.55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e947-434\u003c\/td\u003e\n\u003ctd\u003e16x12mm\u003c\/td\u003e\n\u003ctd\u003e2.35mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"12x10mm","offer_id":47551856345302,"sku":"947-432","price":7.5,"currency_code":"USD","in_stock":false},{"title":"14x12mm","offer_id":47551856378070,"sku":"947-433","price":7.95,"currency_code":"USD","in_stock":true},{"title":"16x12mm","offer_id":47551856410838,"sku":"947-434","price":9.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/cushion-flat-top-single-bevel-genuine-black-onyx-with-hole-otto-frei.jpg?v=1719954479","url":"https:\/\/www.ottofrei.com\/fr\/products\/cushion-flat-top-single-bevel-black-onyx-cabochon-with-hole-12-16mm","provider":"Otto Frei","version":"1.0","type":"link"}