This is an authentic ROBERTO COIN 18K Yellow Gold Diamond Cursive Initial B Pendant Necklace. The necklace is crafted of 18 karat yellow gold and features a cursive 'B' pendant set with diamonds weighing approximately 0.33 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.