This is an authentic ROBERTO COIN 18K Yellow Gold Diamond Barocco Twisted Circle Necklace. The necklace is crafted of 18 karat yellow and features a twisted rope motif pendant set with diamonds, approximately .09 total carat weight, 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.