American jewelry brand Jacob & Co has launched its latest Astronomia Flawless watch. Based on the unmistakably gravitational three-axis tourbillon watch, the timepiece features a sun, moon, globe and a complex movement, visible from all sides through a one-piece sapphire case. This gorgeous watch features sapphire barrel bridges in the movement, a blue sapphire dial, and a sapphire clasp on a blue strap.
The sapphire case of the Jacob & Co Astronomia Flawless watch consists of a case, a dome and a case back. Artisans take about 37 weeks to produce the sapphire components. To create the dome, master artisans cut the raw material, grind and machine it on CNC equipment, polish, finish ultrasonically clean and anti-reflection treatment. The case took 326 hours to complete, and an additional 300 hours of cutting, polishing, chamfering and brushing to complete the sapphire base. The sapphire disc that represents the dial takes 280 hours to make, and it takes about the same time to make the sapphire buckle.
At the heart of the Jacob & Co Astronomia Flawless watch is an upgraded hand-wound movement, the JCAM16 movement, with a three-axis tourbillon. The timepiece features two spherical, 288-faceted diamond spheres: one is a 1-carat Jacobean-cut diamond at one end of a satellite opposite an 18-carat rose gold and enamel globe. Between the two spheres, rising from the central axis of the movement, is a second diamond sphere – a 2.23-carat Jacobean-cut yellow diamond with facets.
Astronomical Sky at Jacobs & Co.
Jacob & Co.’s Astronomia Sky pushes the three-axis tourbillon even further.
For Jacob & Co, it has been making amazing complications the watch industry has never seen before (think Epic SF24, Quentin Tourbillon and Palatial Flying Tourbillon Jumping Hours and Minute Repeater), Astronomia 3-Axis Gravitational Tourbillon, in 2014 Launched, a game changer. Not only is it a unique complication, but it is a very beautiful watch.
This year, Jacob & Co. has taken the astrogravitational three-axis tourbillon completely to another level by adding a world-first astronomical complication.
The new Astronomia Sky introduces a three-dimensional star display, a unique day/night indication, an orbiting seconds hand, a gravitational three-axis tourbillon – of course – and a spherical orange sapphire moon.
This timepiece’s Celestial Dial is a blue grade 5 titanium dial featuring an 18-carat Venus and hand-engraved zodiac signs that make one full revolution every sidereal year – the actual time it takes Earth to make one revolution around the sun respects star.
Above this celestial dial is the oval sky indicator, which shows the portion of the stars visible from the northern hemisphere (don’t worry, Jacob & Co. will make one that shows the southern hemisphere sky as needed). The indicator makes one rotation in a sidereal day (23.5640916 hours).
Visible through the sapphire case opening, the 12 months are displayed on the side of the stellar dial. The perpetual calendar hands indicate the current date.
At the center of the satellite axis, a hand-engraved lacquered titanium sphere rotates on its own in a tinted half-dome sapphire crystal, symbolizing night and day. Due to the differential system, this Earth undergoes one full rotation in 24 hours a day. Replica Watches Store
Four satellites perpetual motion, revolving around the dial every 20 minutes. Rotating on one of the satellites is the stunning three-axis gravitational tourbillon, which rotates around one axis in 60 seconds; it revolves around the second axis every 5 minutes and the dial every 20 minutes.
On the other satellite is the time (hours and minutes) subdial. Thanks to the clever differential gear system, the time display is always in the correct position – in other words, 12 o’clock is always up!
On the third satellite is the orbital seconds hand, a skeletonized titanium wheel that rotates every 60 seconds, and it also makes one revolution around the dial every 20 minutes.
On the fourth and final moon is the “Jacob Cut Red Moon,” a spherical orange sapphire with 288 facets. A first for the modern jewelry industry, this gem cut rotates around its axis every 60 seconds and around the dial every 20 minutes.
Wow! Just describing the watch is challenging enough, imagine designing and producing it!
Jacob & Co. Astronomia 3-Axis Gravitational Tourbillon
Exclusive Jacob & Co. hand-wound JCAM11; 60-hour power reserve
47mm 18-karat rose gold; water resistant to 30m