This is an authentic DAVID YURMAN Sterling Silver Diamond Black Onyx 10mm Noblesse Ring 54 6.75. The ring is crafted of sterling silver and features a 10mm faceted black onyx stone and approximately .15 total carat weight of diamonds as the halo. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.