The Mystery Tourbillon | Full Black Spinel (Black Gold) Jacob & Co.

I.ITEM NUMBER
SN800.31.AA.UB.A

II.MOVEMENT
Caliber: JCAM32
Winding: Hand-wound
Components: 430
Power Reserve: 50 Hours
Frequency: 21'600 vph (3 Hz)
Functions: Mysterious Hour and Minute Rings

Central, flying, twin, triple-axis tourbillon with differential

1st Axis: Rotation in 60 Seconds

2nd Axis: Rotation in 120 Seconds

3rd Axis: Rotation in 120 Seconds 

III.CASE
Size: 50 mm
Height: 25 mm
Material: 18K Black Gold
Crystal: Double-curved Anti-Reflective Sapphire Crystal
Caseback: 18K Black Gold
Water resistance: 30 m (3 atm)

IIII.GEM SETTING
Case: Invisibly-Set with 192 Hexagon-cut Black Spinels (≈12.41 ct.)
Inner Ring: Invisibly-Set with 108 Black Spinels (≈4.56 ct.)
Minute Ring: Invisibly-Set with 119 Black Spinels (≈6.1 ct.) and 1 Ruby (≈0.18 ct.)
Hour Ring: Invisibly-Set with 119 Black Spinels (≈8.11 ct.) and 1 Ruby (≈0.28 ct.)
Hour Markers: 12 Black Spinels (≈1.49 ct.)
Clasp: set with 18 Baguette Black Spinels (≈1.76 ct.)
Total Carat Weight: 568 Black Spinels (≈34.43 ct.) and 2 Rubies (≈0.46 ct.)

V.DIAL & HANDS
Dial: Titanium Hour And Minute Rings
Hands: 2 Rubies

VI.STRAP & CLASP
Strap: Alligator Leather
Clasp: 18K Black Gold Folding Clasp