Onyx noir véritable coussin, bombé, à biseau simple, avec trou

Black Onyx, also known as black agate, is dyed black chalcedony. 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.

Features

• Genuine black onyx (dyed black chalcedony)
• Cushion buff top with single bevel profile
• Drilled hole for easy setting or stringing
• Uniform opaque black color throughout
• Historically popular in Art Deco jewelry styles
• Clean with warm, soapy water — ultrasonic and steam cleaning generally safe

Specifications

Available Options