This is an authentic ROBERTO COIN 18K Yellow Gold Diamond Pink Opal Mother of Pearl Venetian Medallion Bracelet. The bracelet is crafted of 18 karat yellow gold and features a round station set with a pink opal and mother-of-pearl doublet and approximately .05 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.