The Astronomia is the epitome of 21st century haute horlogerie 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. Re-engineered from the ground up, the Astronomia Solar is the most compact in our peerless collection of Astronomia calibers.
Despite its close-packed design, the Astronomia Solar Planets Jewelry displays the precious planets of our Solar System as Jacob-Cut®, 288-facet gemstone spheres, placed on the rotating platform of the Astronomia Solar caliber. Its three main arms carry the differential-driven, self-leveling time display, the magnesium globe in hand-painted blue for a spectacular representation of Planet Earth, the one-minute flying tourbillon regulating organ. Its subsidiary arms carry three Jacob-Cut®, 288-facet stones, along with a center-mounted, 1.5ct Citrine stone to represent our Sun. The Astronomia Solar Planets Jewelry makes for a beautifully artistic, highly refined and fully mechanical recreation of our solar system, to be appreciated like it has never been done before.
EXCLUSIVE ASTRONOMIA CALIBER
The Exclusive JCAM19 caliber of the Astronomia Solar Planets Jewelry stands out from an exquisite range of Astronomia calibers by being the most compact reiteration of the original, allowing for yet smaller case dimensions as well as redesigned proportions. Composed of 444 components, all finished to the highest standards of haute horlogerie, the Astronomia Solar Planets Jewelry features two rotating platforms. One comprises the three main arms and subsidiary arms of the caliber, while the other is the aventurine Skylayer that serves as their spectacular, rotating backdrop.
The rotating platform of the JCAM19 caliber completes a rotation around the center of the watch in under 10 minutes, while simultaneously driving the aventurine Skylayer in a counterclockwise direction to add further animation and complexity to this unique take on celestial watchmaking.
ROTATING GEMSTONE PLANET DISPLAY & AVENTURINE SKYLAYER
The Astronomia Solar Planets Zodiac brings a host of beautifully executed, astronomically inspired details to the world of Astronomia. A view on four planets from our solar system can be admired with a hand-painted blue magnesium globe for Planet Earth and three gemstones crafted in the most complex of cuts. An Amethyst, a Topaz, and a Peridot stone with their exclusive Jacob-Cut® 288 facets complement the cutting-edge watchmaking feats of the Astronomia Solar Planets Jewelry. Serving as a spectacular backdrop for these precious planets is the aventurine Skylayer disc that rotates counterclockwise, against the rotation of the Astronomia’s three-arm movement platform. This makes for a unique coming together of gem-cutting prowess and ultra-high-end watchmaking, as can only ever be experienced in a Jacob & Co creation.
The aventurine base rotates counter-clockwise 360 degrees in 10 minutes, carrying 7 Planets made of Cabochon-cut Precious Stone Half-Spheres: White Granite for Mercury, Rhodonite for Venus, Red Jasper for Mars, Pietersite for Jupiter, Tiger Eye for Saturn (18K Rose Gold applique for the rings), Blue Calcite for Uranus, and Lapis Lazuli for Neptune
Whereas the tourbillon was originally invented to be a single-axis, rotating cage secured from above as well as below to carry the regulating organ of a mechanical pocket watch for improved timekeeping performance, the Astronomia Solar Planets Jewelry presents this 224-year-old invention in a yet more spectacular way.
The one-minute flying tourbillon of the Astronomia Solar Planets Jewelry features a delicately decorated cage that encapsulates the balance wheel, hairspring, escape wheel and a number of other crucially important components. This openworked, rose gold cage not only features the J&Co logo in its architecture, but is only secured from underneath, allowing for an unobstructed and full view at the ultimate refinement of its detailing and operation. It is a constellation of superbly finished components that, when assembled and fine-tuned expertly, allows the JCAM19 to keep accurate time throughout its 48-hour power reserve.
CASE & CRYSTAL
The Astronomia Solar Planets Jewelry’ case measures 44.5 millimeters in diameter and 21 millimeters thick between the highest point of its specially curved front sapphire crystal and the lowest point of its case. Its 18K Rose Gold case holds a single-piece sapphire crystal window around its periphery, allowing for unhindered viewing of the spectacular caliber and gemstones inside. One’s focus on the universe that lives inside the Astronomia Solar Planets Jewelry is further assisted by the openworked lugs – a minute, yet important detail that drives ones vision towards the center of the timepiece.
DIAL & HANDS
The time display sub-dial of the Astronomia Solar Jewelry Planets Zodiac is driven through an infinitesimal differential system that allows it to always remain levelled and hence perfectly legible, even as the movement’s four-armed platform performs its continuous, 10-minute orbit. The Zodiac signs on the blue dial are hand-engraved and filled with 18K rose gold, while the hand-finished hands are coated in 5N Rose Gold.
ITEM NUMBER: AS310.40.SP.ZK.A
Caliber: Exclusive Manufacture Jacob & Co. Manual Winding JCAM19
Height: 16.50mm (11.70mm excluding Citrine)
Functions: Hours and Minutes
System: Vertical Movement with 3 Arms, Full Revolution in 10 min around a
• Flying Tourbillon Cage in 60 seconds
• Rose Gold and Blue Lacquered Globe Rotating in 60 sec
• Hours and Minutes Dial, Patented Differential Gears System℗ allows to keep the 12/6 O’clock position
Citrine Jacob cut® (288 facets; ≈ 1.5cts) on top of the movement.
Frame carrying 3 Jacob cut® Gems stones: Amethyst, Topaz and Peridot.
Aventurine base rotates counter-clockwise 360 degrees in 10 minutes, carrying 7 Planets made of Cabochon cut Precious Stones Half-Spheres: White Granite for Mercury, Rhodonite for Venus, Red Jasper for Mars,Pietersite for Jupiter, Tiger Eye for Saturn (18K Rose Gold applique for the rings), Blue Calcite for Uranus and Lapis Lazuli for Neptune
Power Reserve: 48 Hours
Frequency: 28,800 vib/h (4 Hz)
Finishing: Plate and Bridges: Sand-blasted and Angled; Geartrain: Circular
Graining, Polished Sink; Polished Screws; Barrel: Circular Graining; Flat
Material: 18K Rose Gold and Sapphire
Case Back: 18K Rose Gold
Bows: Winding and Time-Setting via two 18K Rose Gold bows
Skylayer Front Case: Aventurine
Crystal: Unique Domed Sapphire with double Anti-Reflective Treatment
Water resistance: 30m
Dial & Hands:
Dial: Blue PVD Dial with Rose Gold Plated Engraving of Zodiac Signs
Hands: Rose Gold
Strap & Clasp:
Clasp: 18K Rose Gold Folding