Artigianato orologiero giapponese

Japan has developed a system of decorative and finishing techniques that has no equivalent in any other watchmaking tradition. This is not aesthetics applied after the fact: each technique originates from an autonomous craft, often centuries-old, and is adapted to the dial or case without losing its essence.

Zaratsu polishing is the most well-known case. The name is the Japanese transliteration of the German brand Gebrüder Sallaz — ザラツ — and refers to a technique in which the flat side of the abrasive wheel works the flat surfaces of the case, producing a mirror-like finish free of optical distortion. Minase still calls it Sallaz, preserving the original name. Grand Seiko has been using it at least since the 1950s. The visible result is the sharp transition between a polished and a brushed surface: if there's even a slight residual curvature, you can see it.

Dials worked with Urushi lacquer are a separate chapter. Urushi is the sap of the Toxicodendron vernicifluum tree: in its raw state it's highly toxic, requires lengthy treatments, hardens by absorbing moisture from the air, and over time becomes harder than modern polymers. Deep black is achieved by adding iron. The Maki-e technique—"scattered picture"—involves gold or silver powder being distributed over still-fresh lacquer, layer upon layer. Isshu Tamura, the master lacquerer who works for Grand Seiko on certain pieces like the SBGW295, builds markers and hands using this method. The result is three-dimensional, not printed.

Shibo Urushi is a variant created by Junichi Hakose by mixing lacquer, pigment, and egg white: the resulting surface has nuances that change according to light, and each dial is unique by definition. Shikkoku indicates the densest black obtainable with Urushi—a black that absorbs light without reflecting it—which later became an aesthetic reference outside the lacquer tradition as well.

On the dial, Japanese landscape inspirations translate into precise textures. The Washi finish mimics the fiber of shoji paper: in certain Citizen watches, authentic paper is used, porous enough to allow light through to the solar cell. Kirazuri—a woodblock technique with mica powder—produces a kaleidoscopic sparkling effect, visible for example in the Grand Seiko SLGH021. The Asanoha motif, hemp leaf, is a geometric lattice from Japanese textile tradition, embossed in relief on certain Seiko Presage dials.

Takumi (匠) is the term that encompasses all of this: not merely "craftsman," but sustained devotion to a specific trade. The concept of Dou (道), the Way, instead indicates the philosophy that guides every production choice—from case geometry to dial legibility. These are words that Japanese manufacturers use with precision, not as slogans.