Van Cleef & Arpels' Midnight Planétarium watch features an aventurine dial with six tiny spheres representing six planets that rotate at different speeds, with Saturn taking 29 years to complete its rotation.

Van Cleef & Arpels' Midnight Planétarium watch features an aventurine dial with six tiny spheres representing six planets that rotate at different speeds, with Saturn taking 29 years to complete its rotation.

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