Cartier Tank Francaise White Gold Diamond Ladies Watch WE100251. Quartz movement. Rectangular 18k white gold 20.0 x 25.0 mm case. Octagonal crown set with an original Cartier factory diamond. 18k White gold original Cartier factory diamond bezel. Scratch resistant sapphire crystal. Silver dial with black radial Roman numerals. Sword shaped blued steel hands. Secret Cartier signature at X. Burgundy silk strap with 18k white gold deployant buckle.