Astronomia Clarity replica
The Astronomia Clarity, launched by Jacob & Co. in 2017, is a fully sapphire crystal celestial tourbillon. Its core design uses a completely transparent sapphire crystal case to showcase the classic Astronomia's four-arm celestial system "unobstructed," making it the brand's most transparent and sculptural masterpiece.
I. Core Specifications (2026 Reference)
Case: 50mm × 25.45mm, 18K rose gold/white gold frame + full sapphire crystal case (bezel, sides, and case back are all sapphire), water resistant to 30 meters.
Movement: In-house JCAM12 manual winding, 365 parts, 42 jewels, 21,600 vph, 60-hour power reserve.
Strap: Blue/black alligator leather, 18K gold folding clasp.
II. Core Features: Four-Arm Celestial System (One revolution every 10 minutes)
Same as the basic model, but with an unobstructed sapphire crystal:
Tri-axis tourbillon: 60-second rotation, 2.5-minute revolution around the center, and 10-minute revolution around the center, counteracting gravity.
Jacob-Cut Diamond: 1 carat, 288 facets, 30-second dual-axis rotation, sparkling like the moon.
Blue-Painted Earth: Magnesium alloy, 30-second dual-axis rotation, sculpting the contours of continents.
Hour and Minute Discs: Off-center design, differential gears keep time in the forward direction.
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III. Main Versions
Astronomia Clarity Rose Gold Basic Model (AT120.40.AD.SD.ADE4D)
18K rose gold frame, blue earth + white diamonds, full sapphire crystal transparency, list price approximately...
Astronomia Clarity White Gold Model
18K white gold frame, enhanced transparency, lugs can be set with baguette diamonds (approximately 6.1 carats).
Astronomia Clarity Baguette with Bagnore Diamonds: Bezel and lugs set with baguette diamonds, a fully diamond-set luxury version, the rarest of its kind.
IV. Key Differences from the Astronomia Basic/Casino/Solar Models:
Clarity: 50mm, full sapphire crystal with four arms, manual transmission JCAM12, pure cosmic perspective theme.
Basic: 50mm, metal case with four arms, automatic/manual transmission, extremely limited edition, pure cosmic theme.
Casino: 47mm, metal case with four arms and a roulette wheel, manual transmission JCAM36, gaming + cosmic theme.
Solar: 44.5mm, metal case with three arms and a planetary ring, manual transmission JCAM19, limited/regular edition, solar system theme.
V. Collectible Value:
Scarcity: Almost exclusively private collections, extremely rare on the market.
Craftsmanship: Developed over 15 months with a full sapphire crystal case, this timepiece blends haute horlogerie, jewelry setting, and perspective art, setting a new benchmark for modern complicated watches.
VI. In a nutshell: The Astronomia Clarity is an unobstructed mechanical universe on the wrist: a 50mm full sapphire crystal case, four celestial arms revolving around the sun every 10 minutes, a 1-carat Jacob Cut diamond, and a blue-lacquered Earth. It presents the romance of the universe and the precision of mechanics without reservation, making it Jacob & Co.'s most transparent and sculptural top-tier complicated watch.
