This is an authentic DAVID YURMAN Sterling Silver Diamond Black Onyx 20mm Cushion On Point Pendant Necklace. This necklace is crafted of a sterling silver box chain that features a 20mm black onyx and diamond pave set bail, weighing approximately .14 total carat weight. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.