This is an authentic ROBERTO COIN 18K Yellow Gold Diamond New Barocco One Row Braided Ring 54 7. The ring is crafted of 18 karat yelllow gold and features a sculptural rope motif band. The ring also features the signature synthetic ruby on the inside of the band. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.