This is an authentic JOHN HARDY Sterling Silver 18K Yellow Gold Diamond Blue Topaz Batu Sari Ring size 51 or 5.75. The ring is crafted of sterling silver and features a 18 karat yellow gold dot accents, a faceted blue topaz center stone, and a halo of round cut diamonds weighing approximately .18 total carat weight. Follow this item for alerts. John Hardy is a registered trademark of John Hardy. FASHIONPHILE is not affiliated with John Hardy.