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Astronomia Spider
(RETAIL PRICE: $940,000)

Astronomia Spider


When the Astronomia Tourbillon was introduced in 2014, the re-invention of the tourbillon in a vertical orientation and the constant turning of its four satellites garnered most of the attention.

What led to the development of the Astronomia Art Collection, however, is the incredible sapphire crystal and precious metal case, which puts everything on display.

So, the idea was to develop special works of art to put inside the Astronomia Tourbillon, using its massive sapphire crystal case as a gallery, while still showcasing the incredible Astronomia tourbillon movement. The brand started with dragons, octopi, spiders, horses and more. Incredibly successful, Jacob & Co. has expanded the Astronomia Tourbillon Art Collection every year since.

High Watchmaking Serving High Art

The Spider placed on top of the Astronomia Tourbillon starts out as just a titanium frame, which is then enhanced with a 18K white gold exoskeleton. This complex structure is then coated with black PVD. Then, duck feathers are embroidered onto the frame with silk thread and the result is an incredibly realistic tarantula. The entire process, from conceptions to realization, takes more than four months, all in the hands of one artist.

Spiders are known for creativity, invisibility and invincibility, and this Spider certainly makes a statement.

The Tourbillon

The tourbillon is widely considered the ultimate complication, as it turns and spins to counter the effects of gravity on the precision of the movement. For the Astronomia Collection, Jacob & Co. has taken the tourbillon one step farther, introducing additional axes in which the tourbillon turns. For the Astronomia Art Spider, the tourbillon is triple-axis - turning in two axes: one in 60 seconds and the second in 2.5 minutes and the third going around the dial in 10 minutes.

a close up of a motorcycle

Astronomia Spider Video

a close up of a flower


Customization and bespoke work has been the foundation of Jacob & Co. since the beginning and continues to this day. The brand has created a number of Astronomia Art pieces - Dragons, Spiders, Octopi, Horses, Tigers, world cities and more. Visit any Jacob & Co. point of sale or contact the brand directly to inquire.

The Astronomia Art Collection has become an icon within the brand and collectors look to Jacob & Co. to see what's coming next. The Astronomia Art is a showcase of Jacob & Co.'s commitment to using traditional métiers d'art in a modern way.

The Jacob-Cut Diamond

Jacob & Co. has been on the forefront of using precious stones since its founding in 1986, and has developed a number of special cuts and setting techniques. For the Astronomia Tourbillon, the brand developed the 288-facet Jacob-cut diamond. This special cut can be accomplished by only a select few gem cutters, and the rough stone typically starts out double the size of the finished diamond. The facets have to be incredibly precise so the diamond is perfectly symmetrical and round. In the Astronomia Art, the one carat Jacob-cut diamond rotates on itself in 30 seconds.

a close up of a motorcycle

The Magnesium Globe

The globe is made of magnesium to ensure consistency in weight, as all four satellites have to weigh exactly the same. The globe rotates on itself in 30 seconds.
a close up of a motorcycle


The Astronomia Art Spider'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. Crafted from 18K white gold, the case features four sapphire crystal windows installed throughout the periphery, allowing for unhindered viewing of the spectacular caliber and the artwork inside. The lugs are invisibly set with baguette-cut white diamonds.


The time display sub-dial of the Astronomia Spider is driven through an infinitesimal differential system that allows it to always remain in the correct, 12/6 position as it rotates together with the movement's four-armed platform across the front of the Astronomia. The Roman numerals on the skeletonized dial are hand-engraved and filled with black lacquer, while the hand-finished hands appear in gun blue metallic.

a close up of a motorcycle

At A Glance:

3-D titanium, white gold and duck feather hyper-realistic Spider on top of the movement.

Iconic gravitational triple-axis tourbillon.

Four satellite arms turn around the dial in 10 minutes.

288-facet Jacob-cut diamond turning in 30 seconds.

Magnesium globe turning in 30 seconds.

Patented differential keeps the time display in the right orientation.

Domed and curved, anti-reflective sapphire crystal.

a close up of a motorcycle

Technical Specifications

Item Number: AT820.30.SP.SD.B

MOVEMENT: Manufacture Jacob&Co. Manual Winding JCAM24; Diameter: 40mm; Height: 17.15mm; Material: Titanium; Sapphire Barrel Bridge; Components: 365; 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, One Sapphire Bridge; Polished Screws; Barrel: Circular Graining; Pinions: Conical Pinions; 4 Mechanical Ball Bearing Devices; Flat Balance Spring.

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; 3D Spider in Titanium and White Gold with Real Hairs. Weight: 1.02g; Hours and Minutes Dial, Patented Differential Gears System℗ allows to keep the 12/6 O'clock position.

CASE: Diameter: 50mm; Height: 25.45mm; Material: 18K White Gold; Sapphire Apertures on Side; Case Back: Sapphire with Anti-Reflective Treatment GoldMetallization; Bows: Winding and Time-Setting via 18K White Gold lift-out rotating "bows" at case back; Lugs: 80 Baguette White Diamonds Invisibly Set (≈ 6.10 ct.); Crystal: Unique Domed Sapphire with Anti-Reflective Treatment; Water resistance: 30m.

DIAL & HANDS: Dial: Titanium; Hand Angled and Polished, Lacquered Indexes Hands: Gun Blue Finish.

STRAP & CLASP: Alligator Clasp: 18K White Gold Folding Buckle.


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Flagship Boutique
/ Corporate Office

48 East 57 Street
New York, NY 10022
+1 (212) 719-5887
Jacob & Co

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