Ballon Bleu de Cartier watch, 36 mm. Self-winding mechanical movement. Rose gold 750/1000 case set with 54 brilliant-cut diamonds totaling 0.78 carats. Fluted crown decorated with a cabochon sapphire. Matt silvered stamped sunray dial set with 21 brilliant-cut diamonds totaling 0.19 carats. Blued-steel sword-shaped hands. Sapphire crystal.  Burgundy alligator leather strap, rose gold 750/1000 ardillon buckle. Thickness: 0.47”. Water-resistant up to 3 bar (approx. 30 meters/100 feet).