Item #: 958266 This is an authentic CARTIER 18K White Gold 7mm C De Cartier Ring size 51 or 5.75. This stylish ring is composed of 18 karat white gold and features the double Cartier C's at the sides of each opening. Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.