Jacob & Co. Billionaire III 18K White Gold Diamond Tourbillon Watch — Pre-Owned

The Jacob & Co. Billionaire III brings high jewelry and intricate mechanical watchmaking together in an extraordinary diamond-set timepiece. Crafted in 18K white gold, its case, inner ring, bracelet and movement feature 714 white diamonds totaling approximately 129.60 carats.

At its center, the hand-wound JCAM39 skeleton movement reveals a geometric architecture inspired by the facets of a diamond. Delicate white gold bridges set with 57 baguette-cut diamonds create a continuous interplay of light between the movement and its jeweled surroundings. A one-minute tourbillon sits vertically aligned with the large barrel, which delivers a 72-hour power reserve.

The 54 × 43 mm case frames blued, skeletonized hands beneath an anti-reflective sapphire crystal. A sapphire caseback reveals the movement from the reverse, while the diamond-set 18K white gold bracelet closes with a folding clasp.

Produced in a limited edition of 18 pieces, the Billionaire III combines exceptional gem-setting with the visual depth of a skeleton tourbillon.

• Condition: Pre-owned
• Movement: Hand-wound JCAM39 skeleton caliber, 167 components
• Functions: Hours, minutes and one-minute tourbillon
• Power reserve: 72 hours
• Frequency: 21,600 vibrations per hour (3 Hz)
• Case: 18K white gold, 54 × 43 mm, 11 mm thick
• Gem-setting: 714 white diamonds, approximately 129.60 total carats
• Crystal: Anti-reflective sapphire
• Caseback: Sapphire crystal
• Bracelet: 18K white gold with folding clasp
• Manufacturer water-resistance rating: 30 meters / 3 ATM
• Edition size: 18 pieces