This is an authentic CARTIER 18K White Gold Diamond 20mm Tank Francaise Quartz Watch. The watch is crafted of 18 karat white gold and features a white dial, black Roman numeral hour markers, diamond bezel weighing approximately .48 total carat weight, sapphire crystal, and a Swiss quartz movement. Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.