Arnold & Son Perpetual Moon 38 White Gold Aventurine

Based in La Chaux-de-Fonds, Arnold & Son has based its identity on the ability to create fine watchmaking complications that are linked to the maritime heritage of John Arnold. An 18th century visionary focused on creating true chronometers, modern Arnold & Son timepieces include complications like the dead-beat seconds, dual time zones, 8-day power reserves. Now, the brand brings a new edition of the Perpetual Moon 38 in white gold case with diamond-set bezel and aventurine dial.  

Limited to 18 pieces, the dial steals the show with its starry night motif. The aventurine glass dial is peppered with metallic fragments to evoke distant stars twinkling in the night sky. With a massive, lumed lunar complication on the top half of the dial, featuring a mother-of-pearl moon, Arnold & Son pays homage to the brand’s origins. The brand exhibits its mastery of color, its sense of texture and its taste for materials. 

Measuring 38 mm in diameter and 10.44 mm thick, the case of the Perpetual Moon 38 is fashioned from a solid block of white. The use of rare and precious materials has become a special signature of Arnold & Son, adding a degree of lavishness to match the the design and craftsmanship of the brand’s timepieces. Here, the case is adorned with brilliant-cut diamonds across the bezel, lugs, and buckle. Additional marquise-cut diamonds are applied to the dial for the hour markers. In total, this timepiece carries roughly 2.66 carats of diamonds, bestowing a remarkable radiance on the Perpetual Moon 38 White Gold, Aventurine Edition. 

Staying true to its tradition as a precision watchmaker, caliber A&S1612 is a heavy-hitter in horology. The caliber features a moon disc almost as large as the movement itself. With a 90 hour power reserve, this manual-wind timepiece ensures that the moon-phase complication will remain accurate for 122 years. This means, if kept constantly wound, it would take more than a century for the moon on the dial to experience a one-day time lag on its real-life counterpart in the night’s sky. Limited to 18 timepieces, the Perpetual Moon 38 White Gold, Aventurine Edition is another stunning timepiece in Arnold & Son’s catalog. 

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Functions

  • Hours, minutes

  • Astronomical moon phases

Movement

  • Calibre: A&S1612, mechanical, manual winding

  • Jewels: 24

  • Diameter: 29.4 mm

  • Thickness: 4.95 mm

  • Power reserve: 90 hours

  • Frequency: 3 Hz / 21,600 vph

  • Finishes:

    • Main plate: rhodium-plated, circular-grained

    • Bridges: chamfered, radiating Côtes de Genève

    • Wheels: golden finish, circular-grained

    • Screws: blued and chamfered, polished heads

Dial

  • Blue aventurine glass

  • Hour-markers: 12 marquise-cut diamonds

Moon Phases

  • Sky: blue aventurine glass

  • Moons: mother-of-pearl with Super-LumiNova

  • Constellations: Cassiopeia & Ursa Major, hand-painted with Super-LumiNova

Case

  • Material: 18-carat white gold

  • Diamonds: Bezel, lugs, crown set with 80 brilliant-cut diamonds

  • Diameter: 38 mm

  • Thickness: 10.44 mm

  • Crystal: Domed sapphire, anti-reflective (both sides)

  • Case back: Sapphire crystal, anti-reflective

  • Water resistance: 3 bar (30 m / 100 ft)

Strap

  • Material: Midnight-blue satin alligator leather

  • Buckle: Pin buckle in 18-carat white gold, set with 22 brilliant-cut diamonds

Diamonds

  • Total weight: ~2.66 carats

  • Colour: D–E–F

  • Clarity: IF–VVS

Edition

  • Limited to 18 timepieces