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Jacob & Co Astronomia Solar replica



This article provides an in-depth and systematic breakdown of the Jacob & Co. Astronomia Solar—a top-tier celestial high-complication watch launched in 2017. It represents a milestone in the Astronomia collection's solar system theme, pushing the boundaries of cosmic mechanical aesthetics and jewelry craftsmanship. Each piece features a clearly defined limited edition and a unique design language.

Inspiration and Core Concept

Founder Jacob Arabo's long-standing passion for space exploration was embodied in the Astronomia collection, launched in 2014, as "astrophysics on the wrist." The Solar series aims to recreate a miniature solar system on the wrist: a sun made of approximately 1.5ct, 288-facet Jacob-Cut® citrine, with the eight planets distinguished by different rare gemstones/minerals (such as white granite Mercury, rhodonite Venus, and tiger's eye Saturn, all accompanied by 18K gold rings), a one-minute flying tourbillon, a magnesium alloy hand-painted globe rotating every second, and an hour and minute dial with automatic differential leveling; simultaneously, it achieves a double counter-rotation of a 10-minute clockwise movement platform and a 10-minute counter-clockwise base, creating a zero-gravity cosmic experience.

Main Versions, Specifications, and Limited Editions

First Generation Astronomia Solar (2017)
44.5mm diameter, 18K rose gold, four sapphire crystal windows, dome anti-reflective sapphire crystal; water resistant to 30m. In-house JCAM19 manual-winding movement (447 components, 43 jewels, 4Hz frequency, 48-hour power reserve). Aventurine starry sky case back, eight planetary jewels.

Astronomia Solar Constellations
Increased size to 45.5mm, 18K rose gold; upgraded case back to blued titanium and engraved with the zodiac constellations.
The sun remains a 288-faceted citrine, the satellite arms retain the hour and minute discs, tourbillon, and globe.

Astronomia Solar Zodiac
Narrowed size to 43.4mm for a more comfortable fit; aventurine case back (starry night effect), more refined constellation and planetary jewels, some versions fully set with diamonds.
JCAM19 movement unchanged, water resistant. 30m; Balancing jewelry-like elegance with everyday wear.

Astronomia Solar Full Baguette: The ultimate jewelry version, featuring extensive baguette-cut diamonds/gemstones set in the case, bezel, and movement support; the sun and planetary gemstones have also been upgraded.

43.4/44.5mm available.

Key Technical Highlights:

Patented differential automatic leveling: The hour and minute dials always remain 12 o'clock upwards, regardless of the platform's high-speed rotation, ensuring clear readings.

10-minute double counter-rotation: The movement platform rotates clockwise, and the case back rotates counter-clockwise, completing one revolution every 10 minutes, making it the first model in the series to achieve this high-speed counter-rotation.

Jacob-Cut® 288-facet citrine: Exclusive cutting technology, with light refraction far exceeding ordinary gemstones, creating a visually striking sun effect.

Microplanet material precision: Each of the eight planets uses a natural gemstone/mineral of corresponding color/texture; Saturn's rings are additionally made of 18K gold for easy identification.