Item #: 509092 Year: 1999 This is an authentic CARTIER 18K White Gold Aquamarine Tank Ring size 49 or 4.75. The ring is crafted of 18 karat white gold and features a square princess cut aquamarine stone set along a high polished white gold band. This is a beautiful ring with the elegant style of Cartier! Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.