This is an authentic CARTIER 18k Yellow Gold Santos Dumont Ring Size 52 US 6. This minimally structured ring is crafted of 18 karat gold. It is a wide band with a simplistic stylized form of clean lines and a bold elegance that will accentuate the wearer's personal style and taste for sophistication, from Cartier. Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.