This is an authentic ROBERTO COIN 18K White Gold Diamond Pink Sapphire Fantasia Ring 56 7.5. The ring is crafted of 18 karat white gold and features a floral concave dome design accented with pink sapphire and diamonds, approximately .48 total carat weight. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.