This is an authentic ROBERTO COIN 18K White Gold Diamond Tiny Treasures Circle Pendant. The pendant is crafted of 18 karat white gold and features a circular shape pave-set with round brilliant cut diamonds, approximately .38 total carat weight. The pendant also features the signature synthetic ruby stone set on the back. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.