This is an authentic DAVID YURMAN 18K Yellow Gold Turquoise Diamond 11mm Chatelaine Ring 54 7. The ring is crafted of 18 karat yellow gold and features a polished turquoise center stone held by pave set diamond prongs, approximately .05 total carat weight. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.