Onyx lots are available at auction on LiveAuctioneers. Shop unique Onyx works from the world’s most trusted auction houses. In this broad selection of Onyx items there are so many alternatives to choose from, including Earrings, Rings, Necklaces & Pendants, Brooches & Pins, Bracelets, and more. Looking for more options? Many Onyx buyers also enjoy exploring pieces in other trending materials/ techniques such as gold, silver, porcelain, and bronze.