This is an authentic DAVID YURMAN 18K Yellow Gold Diamond Blue Topaz 15mm Cushion On Point Ring 52 6. The ring is crafted of 18 karat gold and features a split shank cable band supporting a cushion cut blue topaz stone set in diamond accented prongs, approximately .13 total carat weight. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.