This is an authentic ROBERTO COIN 18K Yellow Gold Diamond Sideways Cross Necklace. The necklace is crafted of 18 karat yellow gold and features a sideways cross between bezel-set round brilliant cut diamond stations weighing approximately .12 total carat weight. The necklace also features a synthetic ruby set on the back of the cross motif. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.