This is an authentic ROBERTO COIN 18K White Gold Diamond Tiny Treasures Pretzel Pendant Necklace. The necklace is crafted of 18 karat white gold and features a pretzel shape pendant set with round brilliant cut diamonds, approximately .09 total carat weight. The necklace also features a signature synthetic ruby stone set on the back of the pendant. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.