Jacob&Co. Astronomia Solar

CASE : 18K pink gold, glass, case middle and back in transparent sapphire crystal

SIZE : 45mm

MOVEMENT : mechanical manual-winding, Caliber JCAM19, 447 components, 48-hour power reserve

FUNCTIONS : 10-minute rotating motion, 10-minute counter-rotation of the aventurine base, offset hours and minutes, bi-axial flying tourbillon, rotating globe

DIAL : pink gold metallized sapphire

STRAP : alligator leather with pink gold folding clasp

Luminosity and minerality are the twin deep-seated natures of precious stones. A jeweler specializing in large-size colored stones, Jacob&Co was bound to approach watchmaking with a strong focus on these characteristics. They are indeed the principles behind the Astronomia, particularly in its Solar version. Luminosity is at the very heart of this watch, in the form of a sun carved from a citrine according to a brand-specific faceting technique. It diffuses its photons throughout its large panoramic case. Its broad case middle and domed crystal are totally transparent. Minerality is represented by planets. A globe spins on its axis and around the movement. Seven other planets are painted on the base of the aventurine dial. The kinematics of this miniaturized solar system are driven by an entirely rotating movement. It is regulated by a bi-axial flying tourbillon that has all the complexity of an astrophysics equation. Time-setting and winding are effected via the caseback, so as not to disturb the observation of these heavenly bodies in motion. The time appears on an offset dial which, like anyone who admires it, is whirled away into the dance of the stars.