This is an authentic ROBERTO COIN 18K Yellow White Gold Diamond Appassionata Ring 48 4.5. The ring is crafted of 18 karat yellow and white gold, and features a flexible woven style band with a white gold station set with round cut diamonds, approximately .58 total carat weight. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.