Astronomia is the epitome of ultra-high-end watchmaking in the 21st century, and is also a globally recognized symbol of Jacob & Co’s watchmaking expertise. With its unprecedented bold concept and full mechanical structure, Astronomia is the world’s first, surpassing the impressive horological achievements, and is regarded as an outstanding interdisciplinary engineering achievement.
Astronomia Clarity highlights the essence of Astronomia in the purest way: it presents this unparalleled cinematic sculpture through the unrestricted use of sapphire crystal (including the entire case back), while retaining the original Astronomia iconic 18K gold case frame. Its four-arm movement rotates and floats in this sapphire-bound space, finished and meticulously crafted, which can be appreciated from all angles. Astronomia Clarity is full of unique watchmaking solutions and adopts the best fine processing technology of high-end watches, which has won its reputation as a unique symbol in the field of high-end watches.
Exclusive astronomical movement
The four arms of Astronomia Clarity have a three-axis tourbillon chronograph organ with a watch, a hand-painted blue magnesium globe to present a spectacular view of the earth, and a unique Jacob-Cut® 1 carat diamond with 288 facets and different levels The hollow time display. This four-arm assembly can complete the rotation around the center of the watch in 10 minutes, surrounded by an anti-reflective sapphire crystal window. Another amazing feature of Astronomia Clarity is how each pair of opposed arms perfectly calculates each other’s counterweight-a testament to the unparalleled material engineering and watch movement design. By having the same weight on these opposing arms, its shaft can reduce strain and increased tension because the movement takes up different directions in space.
The tourbillon was originally invented as a single-axis rotating frame, used to carry the adjustment mechanism of a mechanical pocket watch to improve timing performance, and Astronomia Clarity brought this 224-year-old invention to an amazing level of modern sophistication and complexity.
The three-axis tourbillon of Astronomia Clarity is at the forefront of modern watchmaking. The beautifully decorated frame of the three-axis tourbillon encapsulates the balance wheel, hairspring, escape wheel and many other vital components. This excellent tourbillon features its hollow frame, which rotates on three axes at the same time. It is a set of meticulously crafted components that have been skillfully assembled and fine-tuned to enable JCAM24 to maintain accurate time in its 60-hour power reserve. Jacob & Co. cheap watches
It takes 60 seconds for the first axis to fully rotate, which is a tribute to the traditional single-axis tourbillon. The second axis of rotation takes 2.5 minutes to complete, and the third axis of rotation is achieved by the 10-minute four-arm rotation of the entire movement assembly of Astronomia Clarity. When designing with cutting-edge ultra-modern technology and timeless horological traditions, this gives people a bold new view of how the tourbillon works.
288 Faceted Jacobian Cut Diamonds
The Jacob-Cut diamond was originally a larger rough diamond. First of all, you must find a rough diamond that is large enough. The purity, clarity and color must be the highest quality inside and outside, without any inclusions. If they start cutting the diamond and find inclusions, the entire diamond will be destroyed.
Next, the diamond is cut by a machine into a round shape close to the final diamond in size.
Then, the gem cutter shapes the gems by hand, cutting each individual facet (288). This must be done slowly and carefully, because the stone must be perfectly round and symmetrical. The danger is that the stone will become rectangular instead of round. To be used in the Astronomia series, the Jacob cut diamond must be completely round and weigh exactly the same as the other three satellites (time display, three-axis tourbillon, and magnesium globe).
During this process, if the gem cutter applies a little too much pressure when adding facets, too many diamonds will be cut, and the ball will eventually be smaller than the required diameter. The cutting process requires at least two weeks of concentration and hard work.
To make the final 1-carat Jacobs cut diamond, with 288 facets, more than half of the initial rough diamond will be cut.
The complexity of hand-cutting 288 facets and ensuring that everything is symmetrical and that the diamond is absolutely round is what makes the Jacob & Co. diamonds used in the Astronomy series so special.
The globe is made of blue lacquered magnesium alloy with rose gold continents to ensure weight consistency, as all four satellites must have exactly the same weight. The earth rotates in 30 seconds and revolves around the dial in 10 minutes.
Case and crystal
Astronomia Clarity’s case has a diameter of 50 mm and a thickness of 25.45 mm, between the highest point of its particularly curved front sapphire crystal and the lowest point of the case. The Clarity case is made of 18K white gold and sapphire crystal, and the top and case back add to the viewing experience-you can enjoy the spectacular movement inside without hindrance. replica watches review
Dial and hands
Astronomia Clarity’s time display sub-dial is driven by a very small differential system. When it rotates with the four-arm platform of the movement across the front of Astronomia, it always remains level and clear. The Roman numerals on the hollow dial are hand-engraved and filled with black lacquer, while the hand-finished hands are presented in gun-blue metal.
At first glance:
Iconic gravity three-axis tourbillon
50 mm 18K white gold and sapphire crystal Clarity case, sapphire crystal case back
All four satellites keep turning their dials for 10 minutes
Turn 288 Jacob cut diamonds in 30 seconds
Magnesium ball rotates in 30 seconds
The unique differential always keeps the time displayed in the correct 12/6 direction, no matter where it rotates
Arched and curved anti-reflective sapphire crystal
Unique crownless design; wrap and set a pull-out bow on the back of the watch
ITEM NUMBER: AT120.30.AD.SD.CBALA
Movement: Manufacture Jacob&Co. Manual Winding JCAM12; 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; System: Gravitational Triple Axis Tourbillon; 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, Minutes Dial Rotating in 10 minutes on the Central Axis, Patented Differential Gears System; Spherical 288 Facets Jacob-Cut White Diamond, Weight: 1 carat; rotating in 30 seconds on 2 axes; Magnesium Lacquered Globe Rotating in 30 seconds on 2 axes; Gravitational Tourbillon Cage Rotating on 3 axes: 1st Axis: in 60 seconds, 2nd Axis: in 2.5 minutes, 3rd Axis: Central Axe in 10 minutes
Case: 50mm; Thickness: 25.45mm; Material: 18K White Gold; Sapphire with Double Anti-reflective Treatment; Case Back: Sapphire with Double Anti-reflective Treatment Gold Metallisation; Bows: Winding and Time-Setting via 18K White Gold; 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 Dial, Polished and Angled, Lacquered Indexes; Hands: Hand Finished Blue.
Strap & Clasp: Alligator; Clasp: 18K White Gold Folding Buckle.Total Carat Weight: 80 Baguette White Diamonds (≈ 6.10 ct.).