This is an authentic ROBERTO COIN 18K Yellow Gold Diamond Venetian Princess Double Medallion Y Necklace. The necklace is crafted of 18 karat yellow gold and features two medallion motifs set with approximately .14 total carat weight of diamonds, along with a synthetic ruby on the chain tag. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.