This is an authentic DAVID YURMAN Sterling Silver Diamond Blue Topaz 14mm Chatelaine Ring 56 7.5. The ring is crafted of sterling silver and features a cable band and a faceted 14mm blue topaz stone in a prong setting accented with approximately .08 total carat weight of diamonds. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.