Item #: 585811 This is an authentic CARTIER 18K Pink Gold 4mm Happy Birthday Band Ring size 63 or 10.5. The ring is crafted of 18 karat pink gold and features the Cartier double C logo engraved throughout the band in an assortment of sizes. This is an elegant ring with the classic style of Cartier! Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.