This is an authentic DAVID YURMAN Sterling Silver Diamond Smoky Quartz 10mm Noblesse Ring 50 5.25. The ring is crafted of sterling silver and features a faceted 10mm smoky quartz stone set in a diamond accented halo, approximately .25 total carat weight. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.