This is an authentic pair of ROBERTO COIN 18K White Gold Diamond X Stud Earrings. The earrings are crafted of 18 karat white gold and feature "X" motifs pave-set with round brilliant cut diamonds weighing approximately .07 total carat weight. The earrings also feature a synthetic ruby on the back each motif. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.