Jacob & Co. Astronomia 3-D Setting

This year at Baselworld, Jacob & Co. introduced the Astronomia 3-D Setting, a new horological marvel boasting a setting technique inspired by the unique relief architecture of a building across the street from the Jacob & Co. boutique and offices in New York City.

Jacob Arabo, the founder of Jacob & Co. masterfully blends the intricate worlds of high jewelry and high watchmaking in the Astronomia 3-D Setting, introducing a new way to set and view beautiful, sparkling baguette diamonds.

The large sapphire crystal case has been a consistent design element of Jacob & Co.’s Astronomia collection since the introduction of the first Astronomia in 2014. The transparency of the case allows the movement of the gravitational triple axis tourbillon to be clearly visible from multiple angles. In the spirit of constant improvement, the Astronomia 3-D setting elevates the level of transparency with the use of the Astronomia’s distinctive sapphire crystal case.

The new 3-D setting adds relief to the aesthetic of the precious stones. On the 18K White Gold front case, 103 Blue Sapphires (≈3.36 ct.), 150 Icy Blue Sapphires (≈2.27 ct.) and 134 White Diamonds (≈3.31 ct.) are all 3D set by hand. On the lugs, 80 Baguette White Diamonds are invisibly set (≈6.10 ct.), also by hand.

At the heart of the Astronomia 3-D setting lies the superior timepiece craftsmanship for which Jacob & Co. is renowned. A triple axis tourbillon counteracts the effects of gravitation on the caliber’s mobile components as the tourbillon cage rotates in 60 seconds and completes a revolution over itself in 2.5 minutes, while the entire tourbillon covers a full revolution around the watch’s central axis in 10 minutes. Both the 1-carat, 288-facet Jacob Cut® diamond and the magnesium-lacquered blue globe rotate on themselves in 30 seconds, and travel with the tourbillon and the time display around the dial in 10 minutes.

Jacob & Co.’s patented Differential Gears System allows the time display to maintain the 12/6 o’clock position regardless of where it is in the rotation.

Technical details

Model: ASTRONOMIA 3-D SETTING
Reference: AT800.30.BD.UI.B

Movement
Caliber: Manufacture Jacob&Co. Manual Winding JCAM18
Diameter: 40mm; Height: 17.15mm; Components: 365
Functions: Hours and Minutes
System: Vertical Movement with 4 Arms, Full Revolution in 10 min around a Central Axis
• Gravitational Triple Axis Tourbillon, 1st Cage rotating in 60 sec and 2nd Cage in 2.5 min
• 1 Carat Exclusive Jacob cut® Diamond: 288 Facets, rotating on itself in 30 sec
• Magnesium Blue Lacquered Globe, rotating on itself in 30 sec
• Hours and Minutes Dial, Patented Diff erential Gears System℗ allows to keep the 12/6 O’clock position
Power Reserve: 60-Hours; Frequency: 21’600 vib/h (3 Hz); Jewels: 42
Finishing: Plate and Bridges: Hand Angled and Polished, Flank Draw, Circular Graining, Polished Sink; Polished Screws; Barrel: Circular Graining; Pinions: Conical Pinions; 4 Mechanical Ball Bearing Devices; Flat Balance Spring.

Case
Diameter: 50mm; Height: 25mm; Material: 18K White Gold; Sapphire Apertures on Sides
Case Back: 18K White Gold; Bows: Winding and Time-Setting via 18K White Gold lift-out rotating “bows” at case back; Front Case: 18K White Gold; 3D setting of 103 Blue Sapphires (≈ 3.36 ct.), 150 Icy Blue Sapphires (≈ 2.27 ct.) and 134 White Diamonds (≈ 3.31 ct.) Lugs: 80 Baguette White Diamonds Invisibly Set (≈ 6.10 ct.) Crystal: Unique Domed Sapphire with Anti-Reflective Treatment
Water resistance: 30m

Dial
Titanium, Polished and angled, Lacquered Indexes; Hands: Blue Finish

Strap
Alligator; Clasp: 18K White Gold Folding Buckle invisibly set with 22 Baguette White Diamonds (≈ 1.4 ct.)

Total Carat Weight
16.44 ct.

Limited Edition
Unique piece

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