This is an authentic ROBERTO COIN 18K Rose Gold Mother of Pearl Amphibole Pendant Necklace. The necklace is crafted of 18 rose gold and features a curvy rectangular pendant with polished white mother of pearl. The necklace also features a synthetic ruby on the chain tag. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.