Our selection of beautiful 14k designer black onyx jewelry includes 14k gold black onyx pendants, rings and bracelets in 14k yellow gold and 14k white gold settings. Many of these gorgeous onyx jewelry pieces feature genuine diamond accents and can be set with a variety of other gemstones.

Did you know: Black onyx is not an actual gemstone species, rather it is the common name given to treated black chalcedony. It starts as a dull grey chalcedony, then chemical treatment makes it glossy black. It is the top-selling chalcedony on the market.