This is an authentic DAVID YURMAN Titanium Black Diamond 8mm Curb Chain Ring 68 12.25. The ring is crafted of titanium and features a structured curb chain motif band pave-set with black diamonds, approximately .73 total carat weight. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.