This is an authentic ROBERTO COIN 18K Rose Gold Diamond Cross Pendant Necklace. The necklace is crafted of 18 karat rose gold and features a cross motif pendant adorned with round brilliant cut diamonds weighing approximately .10 total carat weight, and a synthetic ruby 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.