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Photo of Perpetual Moon 38 Night Tide

Perpetual Moon 38 white gold “Night Tide”

Waxing, gibbous, blue: the power of the moon imposes itself on the Earth and even more so, on the seas.

Limited to 18 pieces.

Diamonds making waves

Perpetual Moon 38 Night Tide celebrates the fluctuating pull of this celestial body on the water. A large moon disc appears over vast waves. Made of mother-of-pearl and ruthenium, they rise one after the other in a cascade of soft curves. This scene, illuminated by diamonds, celebrates the femininity, elegance and evocative power of Arnold & Son’s watchmaking.

Technical Specifications

Reference: 1GLMW.Z04A.C284A
hours, minutes, astronomical moon phases
29.40 mm
4.95 mm
Power reserve:
90 hours
3 Hz / 21,600 vph
hand-painted ruthenium crystals and mother-of-pearl marquetry, hour-markers set with 5 marquise-cut diamonds
Moon phases
mother-of-pearl tinted with graduated shades of blue
ruthenium crystals
18K white gold, set with 80 brilliant-cut diamonds
38 mm
10.44 mm
domed sapphire, with an anti-reflective coating on both sides
sapphire crystal, with an anti-reflecting coating
Water resistance:
3 bar (30 metres/100 feet)
sky-blue satin alligator leather, plum purple alligator leather lining, hand-stitched
pin buckle, 18K white gold, set with 22 brilliant-cut diamonds

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Photo of Perpetual Moon 38 Night Tide

Azure, navy, ink, midnight

Perpetual Moon 38 Night Tide is sculpted from a block of white gold. Once shaped, the 38 mm diameter and 10.44 mm thick case is adorned with 80 high-clarity diamonds. Together with the brilliant-cut diamonds adorning the buckle and the marquise-cut stones on the dial, they give a total weight of 2.62 carats. This gem-setting announces the ornamental richness with which Arnold & Son has composed this women’s complication.

Wave after wave, trough after trough, shades of blue and grey follow one another, creating a jumble of undulating seas, mother-of-pearl and ruthenium. Above this scene, a starry sky, punctuated by luminescent hand-painted constellations, is filled with an immense moon. Its surface, also made of ruthenium crystals, lights up the sky. This exceptional material has become a signature of Arnold & Son, adding preciousness, light and texture to its creations.

Photo of Perpetual Moon 38 Night Tide

Her Majesty the Moon

The star complication of the A&S1612 calibre is its moon phase. True to Arnold & Son’s astronomical principle, Perpetual Moon 38 Night Tide features a moon disc almost as large as the calibre itself. The successive shapes of its crescent occupy the large aperture between 10 and 2 o’clock, while the form of its cut-out faithfully recreates the appearance of the moon.

In keeping with its tradition, Arnold & Son has given this moon phase an accuracy of 122 years. Continuously rising, it will take more than a century for this moon to lag one day behind the real one in our skies, watching over the oceans.