Jacob & Co.

Billionaire Double Tourbillon Angel-Cut

The brand's page traces the Billionaire to 2016, a one-off skeleton tourbillon set entirely with very large diamonds, followed by several variations. Monochrome dates the line's debut to 2015. Neither source explains the difference. The previous Double Tourbillon used emerald-cut stones.

White diamond

ref. BL140.30.BD.AC.ABALALimited · 6

Specification · White diamond

Case

Shape
rectangular (Billionaire)
Size
54 × 40 mm
Height
11 mm
Crystal
anti-reflective sapphire
Caseback
sapphire
Water Resistance
30 m / 3 ATM
Material
18K white gold
Gem Setting
98 white Angel-cut diamonds (51.13 ct) and 1 white rose-cut diamond (1 ct)

Movement

Calibre
JCAM50
Type
skeleton, hand-wound
Functions
hours, minutes; two one-minute flying tourbillons
Power Reserve
72 hours
Frequency
21,600 vph (3 Hz)
Components
460
Notable
two barrels, each driving a flying tourbillon; the two tourbillons' rates are combined through a differential that drives the hands; the openworked structure sits under a fully diamond-set brick-wall dial with two round openings onto the tourbillons

Details

Dial
18K white gold, invisibly set with 88 white Angel-cut diamonds (11.07 ct) and 80 white emerald-cut diamonds (1.14 ct); blued skeletonised hands
Straps
blue alligator leather; 18K white gold deployant buckle invisibly set with 30 white Angel-cut diamonds (15.72 ct)

Price

Retail
$3,400,000, as of Mar 2026 (as reported by Monochrome at launch, 25 Mar 2026; tax/duty/delivery basis unstated)

Other versions

On The Crown Journal

All stories →