This is an authentic ROBERTO COIN 18K Yellow Gold Diamond Tiny Treasures Star of David Pendant Necklace. The necklace is crafted of 18 karat yellow gold and features a star motif pendant set with round brilliant cut diamonds weighing approximately .09 total carat weight, along with a hidden 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.