This is an authentic DAVID YURMAN 18K Yellow Gold Diamond Black Onyx Ruby Lexington Barrel Ring 54 7. The ring is crafted of 18 karat yellow gold and features a cable band with a barrel black onyx centerpiece set with ruby and diamond accents, approximately .08 total carat weight. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.