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Astronomia Tourbillon Black Ceramic Rose Gold Movement

Astronomia Ceramic Black with Red Movement


The Astronomia is the epitome of 21st century ultra-high-end watchmaking and a globally recognized symbol of Jacob & Co watchmaking expertise. A world-first both in the boldness of its unprecedented concept and its entirely mechanical construction, the Astronomia has gone beyond impressive horological achievements and has been regarded as an outstanding multidisciplinary engineering achievement.

The Astronomia Tourbillon Ceramic represents a futuristic and menacing take on the very essence of Astronomia: its cinematic sculpture, four-arm movement construction floats through the sapphire-bound space inside its ultra modern, black ceramic case. Full of unparalleled watchmaking solutions and adorned with exceptional finishing techniques, the Astronomia has earned its reputation as an inimitable icon in the field of haute horlogerie.

Exclusive Astronomia Caliber

The Exclusive JCAM24 Jacob & Co Caliber of the Astronomia Tourbillon Ceramic is tailored in black, red or rose gold color schemes, each making for a completely new aesthetic together with the glossy, black ceramic case. The four arms carry the triple-axis tourbillon timekeeping organ of the watch, Planet Earth crafted from a magnesium globe in hand-painted blue, the exclusive Jacob-Cut® 1-carat diamond, and the differential-leveled, skeletonized time display. This four-arm assembly completes a rotation around the center of the watch and over a spectacular backdrop in 20 minutes. Another astounding feature of the Astronomia Tourbillon is how each pair of opposing arms are perfectly calculated counterweights of one another - a testament to peerless materials engineering and watch movement design. By having equal weights on these opposing arms, its axles are relieved from strain and increased pull, as the movement takes up different orientations in space.

Astronomia Ceramic Triple-Axis Tourbillon

Triple-Axis Tourbillon

Whereas the tourbillon was originally invented to be a single-axis, rotating cage to carry the regulating organ of a mechanical pocket watch for improved timekeeping performance, the Astronomia Tourbillon Ceramic brings this 224-year-old invention to breathtaking levels of modern refinement and complexity.

The triple-axis tourbillon of the Astronomia Tourbillon Ceramic is at the forefront of modern ultra-high-end watchmaking. Its delicately decorated cage encapsulates the balance wheel, hairspring, escape wheel and a number of other crucially important components. Characterized by its openworked execution, this outstanding tourbillon rotates on three axes simultaneously. It is a constellation of superbly finished components that, when assembled and fine-tuned expertly, allows the JCAM10 to keep accurate time throughout its 60-hour power reserve.

A full rotation on the 1st axis takes exactly 60 seconds, as a nod towards the traditional single-axis tourbillon. The 2nd axis of rotation requires 5 minutes to complete, while the 3rd axis of rotation is made possible by the 20-minute, four-arm rotating platform of the Astronomia Tourbillon Ceramic. This makes for a bold new look at how tourbillons can function, when engineered with cutting-edge, ultra-modern technologies and timeless horological heritage in mind.

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Astronomia Tourbillon Black Ceramic Rose Gold Movement Video


The Jacob Cut is a unique spherical gem exclusive to Jacob & Co. It is a distinctive work of innovation, creativity, and execution.

The Jacob Cut diamond starts out as a much larger rough diamond, up to twice the size as the finished product. The rough is first cut by machine into a spherical shape, near the size of the final diamond. Then the master gem cutter shapes the 288 facets. To be used in the Astronomia Collection, the Jacob Cut diamond must be completely round and weigh exactly as much as the other three satellites (time display, triple-axis tourbillon, magnesium globe). Another challenge is ensuring the precise dimensions of the facets, which is why the cutting process takes at least two weeks of dedicated, painstaking work.

The Jacob-Cut is most recognizable on the Astronomia watch as a diamond that extends from one of the four arms of the vertical Astronomia movement. However, the cut has been applied on colored gemstones and placed in the dial in other ways.

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The globe is made of blue-lacquered magnesium with white gold continents to ensure consistency in weight, as all four satellites have to weigh exactly the same. The globe rotates on itself in 30 seconds, while traveling around the dial in 10 minutes.

Astronomia Ceramic Case & Crystal

Case & Crystal

The Astronomia Tourbillon Ceramic's case measures 50 millimeters in diameter and 25 millimeters thick between the highest point of its specially curved front sapphire crystal and the lowest point of its case. Presented in glossy black ceramic, a virtually scratch-proof and unapologetically futuristic-looking material, the case features four sapphire crystal windows installed throughout its periphery, allowing for the unhindered viewing of the spectacular caliber inside.

Astronomia Ceramic Dial & Hands

Dial & Hands

The time display sub-dial of the Astronomia Tourbillon Ceramic is driven through an infinitesimal differential system that allows it to always remain levelled and legible as it rotates together with the movement's four-armed platform. The Roman numerals on the skeletonized dial are hand-engraved and filled with gold lacquer and the hand-finished hour and minute hands appear in color-coordinated coatings.

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Iconic gravitational triple-axis tourbillon

50mm black ceramic and sapphire crystal case

Rose gold-colored movement and hour/minute dial with rose gold highlights

All four satellites constantly turn around the dial in 10 minutes

288-facet Jacob-cut diamond turning in 30 seconds

Magnesium globe turning in 30 seconds

Unique differential always keeps the time display in the correct 12/6 orientation, no matter where it is the rotation

Domed and curved, anti-reflective sapphire crystal

Unique crown-less design; winding and setting lift-out bows on the case back

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Technical Specifications

Item Number: AT100.95.KN.SD.B

MOVEMENT: Manufacture Jacob & Co. Manual Winding JCAM18; Diameter: 40mm; Height: 17.15mm; Components: 365; Material: Titanium; Power Reserve: 60-Hours; Frequency: 21'600 vib/h (3 Hz); Jewels: 42; System: Gravitational Triple Axis Tourbillon; Finishing: Plate and Bridges: Hand Angled and Polished, Flank Draw, Circular Graining, Polished Sink; Hand-Polished Screws; Barrel: Circular Graining; Pinions: Conical Pinions, 4 Mechanical Ball Bearing Devices; Flat Balance Spring.

FUNCTIONS: Hours, Minutes Dial Rotating in 10 min on the Central Axis, Patented Differential Gears System; 288 Facets Spherical Diamond Rotating in 30 sec on 2 Axes (Weight: 1 carat; Exclusive Jacob cut) Magnesium Lacquered Globe Rotating in 30 sec on 2 Axes; Gravitational Tourbillon Cage Rotating on 3 Axes.

CASE: Diameter: 50mm; Thickness: 25mm; Material: Black Ceramic; Sapphire Apertures on Sides Case Back: Black Ceramic; Bows: Winding and Time-Setting via Black DLC Grade 5 Titanium lift-out rotating "bows" at case back; Skylayer Front Case: Aventurine; Crystal: Unique Domed Sapphire with Anti-Reflective Treatment; Water resistance: 30m (ISO 2281).

DIAL & HANDS: Dial: Titanium Dial, Hand- Engraved, Lacquered Indexes, Diamond Finish; Hands: Hand Finished Blue.

STRAP & CLASP: Strap: Alligator; Clasp: Black DLC Grade 5 Titanium Folding Buckle.


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Jacob & Co

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