Cartier Rotonde de Cartier Mysterious Hour White Gold / Diamond

The Cartier Ballon Bleu Mysterious Hour HPI00636 is an exceptional timepiece that blends Cartier’s signature elegance with its renowned “mysterious” complication. The 42mm 18k white gold case is fully set with brilliant-cut diamonds, covering the bezel, lugs, and case sides for a dazzling appearance. Powered by the Cartier Caliber 9981 MC, a manual-winding movement, this watch features a unique display where the hour and minute hands appear to float in midair, with no visible connection to the movement. The skeletonized Roman numerals further enhance the effect, creating a sophisticated visual depth. A sapphire cabochon-set crown complements the luxurious design. The timepiece is paired with a black alligator leather strap, secured with an 18k white gold deployant clasp, also set with diamonds. A sapphire crystal protects the dial, while the case is water-resistant up to 30 meters. This Ballon Bleu model is a magnificent fusion of technical innovation and high jewelry artistry.