This is an authentic ROBERTO COIN 18K Yellow Gold White Gold Diamond Disc Pendant Necklace. The necklace is crafted of 18 karat yellow and white gold and features a yellow gold disc pendant with a white gold bar across, set with round brilliant cut diamonds, approximately .07 total carat weight. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.