This is an authentic JOHN HARDY Sterling Silver 18K Yellow Gold Diamond 7.5mm Classic Chain Necklace. The necklace is crafted of sterling silver and features a flexible mesh chain with a large box clasp with diamonds approximately .30 total carat weight and an 18 karat John Hardy logo on the revers side. Follow this item for alerts. John Hardy is a registered trademark of John Hardy. FASHIONPHILE is not affiliated with John Hardy.