This is an authentic ROBERTO COIN 18K Yellow Gold Diamond Princess Flower Three Flower Ring 54 6.75. The ring is crafted of 18 karat yellow gold and features three flower motifs accented with approximately .05 total carat weight of diamonds, and a hidden synthetic ruby on the inside. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.