This is an authentic JOHN HARDY Sterling Silver Blue Topaz Batu Kali Square Pendant Necklace. The necklace is crafted of sterling silver and features a classic woven chain holding a square pendant set with a faceted blue topaz stone with 20 round brilliant diamonds around it, approximately .15 total carat weight. Follow this item for alerts. John Hardy is a registered trademark of John Hardy. FASHIONPHILE is not affiliated with John Hardy.