This is an authentic CARTIER 18K White Gold Diamond C De Cartier Christmas Ring size 51 or 5.75. This limited edition ring is crafted of 18 karat white gold and features a wide open band engraved with the signature double C symbol and accented on each end with the C de Cartier motif pave set with sparkling diamonds weighing 0.15 carats. Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.