This is an authentic DAVID YURMAN Sterling Silver Diamond Blue Topaz Quatrefoil Long Necklace. The necklace is crafted of sterling silver and features box chains with quatrefoil motif stations set with diamonds, approximately .74 total carat weight, along with blue topaz rondelles, finished with a toggle clasp. Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.