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