This is an authentic ROBERTO COIN 18K Rose Gold Diamond Love Letter U Pendant Necklace. The necklace is crafted of 18 karat rose gold and features a letter 'U' motif pendant set with round brilliant cut diamonds, approximately .06 total carat weight, along with a synthetic ruby on the back. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.