This is an authentic DAVID YURMAN Sterling Silver 5mm Box Chain Necklace. This necklace is crafted of sterling silver in the classic box chain style with a lobster clasp for easy wear. This is an excellent necklace with the look of distinction only from David Yurman! Follow this item for alerts. David Yurman is a registered trademark of David Yurman. FASHIONPHILE is not affiliated with David Yurman.