Shirokuro Katana (T10 Steel & Hamon) - 白黒

Hand-forged Shirokuro Katana (白黒 — "White-Black") in T10 tool steel with a prominent hamon temper line and hand-polished finish. Full tang, sharpened. Silver-finished brass tsuba with geometric pattern, brass habaki, white silk ito with hishigami over genuine rayskin, black lacquered solid wood saya with buffalo horn koiguchi and kurikata, black-and-white braided sageo, bamboo mekugi. Includes ornate display stand. Pure monochrome — white handle, black saya, polished steel between them. Nothing else.

Shirokuro Katana Specifications

T10 Blade with Prominent Hamon

The blade is forged from T10 tool steel — tungsten-content high-carbon steel reaching 60-62 HRC after heat treatment. The hand-polished surface reveals a prominent hamon temper line running the blade's full length — white crystalline activity against the darker polished steel, the boundary between hard martensite edge and softer pearlite spine clearly defined. On a monochrome sword, the hamon is not a secondary detail. It is the blade's only decoration: the metallurgical line left by the forging process becomes the sole visual feature. The Shirokuro katana bets everything on the quality of that line — and it delivers.

Silk Ito with Hishigami — Traditional Wrapping

The handle wraps in white silk ito with hishigami — small paper wedges placed under each cord crossing to create the tight, geometrically precise diamond pattern associated with high-grade traditional Japanese sword mounting. Silk provides a smoother, more refined texture than cotton, and hishigami ensure each diamond is uniform and elevated. Beneath the silk, genuine white rayskin (samegawa) provides the grip foundation. The Shirokuro katana uses silk + hishigami + genuine rayskin — the traditional material trio found on historically mounted Japanese swords.

Black Saya — Buffalo Horn Fittings

The saya is high-gloss black lacquered hardwood — deep, reflective, flawless. Buffalo horn koiguchi (saya mouth) and kurikata (cord knot) replace the lacquered wood or brass used on standard katana. Horn is the traditional fitting material on high-grade Japanese swords: denser, more durable, and naturally black without paint. The contrast between the glossy black saya and the white silk handle is absolute — no gradient, no transition color, just black meeting white at the tsuba.

Silver Geometric Tsuba

The silver-finished brass tsuba features a geometric crosshatch pattern across its face — interlocking lines creating a textile-like surface texture. The silver finish maintains the monochrome palette: the guard reads as neither warm nor cool, simply metallic, bridging white handle and black saya without introducing competing color. The rim catches light cleanly, and the geometric pattern rewards close inspection with its regularity and precision.

Shirokuro — Monochrome Duality

Shirokuro (白黒) means "white-black" — the Japanese term for monochrome, but also a cultural concept about clarity, directness, and seeing things as they are without ambiguity. "Shirokuro tsukeru" (白黒つける — "to make it black and white") means settling a matter decisively. The Shirokuro katana embodies that philosophy: no compromise colors, no decorative hedging, just the extremes and the steel between them. T10 blade, silk wrapping, buffalo horn fittings — every material is the premium version, and none of them hide behind color.

Display

Ships with an ornate black stand with painted dragon-and-peony panel. The Shirokuro katana pairs naturally with the Full Black (all dark, no contrast) or the White Katana (navy blade, white saya — inverted palette) to show different approaches to monochrome. Solo, the black-white contrast makes the sword one of the most photographable swords in the catalog — the stark palette works in any lighting and on any background.

Frequently Asked Questions

What does Shirokuro mean?

Shirokuro (白黒) means "white-black" in Japanese — the term for monochrome. It also carries a cultural meaning of clarity and decisiveness, as in the expression "shirokuro tsukeru" (settling a matter black and white).

What is hishigami?

Hishigami are small triangular paper wedges placed under each cord crossing during handle wrapping. They create the elevated, uniform diamond pattern associated with high-grade traditional Japanese sword mounting. The Shirokuro uses silk ito with hishigami — the traditional premium combination.

Is this katana sharp?

Yes. The T10 tool steel blade is hand-sharpened and functional. Handle with care, store in the saya, and check local regulations before ordering.

Is the rayskin genuine?

Yes. This katana uses genuine white rayskin (samegawa) beneath the silk ito wrapping. The nodular texture is natural, not synthetic.

What is buffalo horn used for on this katana?

The koiguchi (saya mouth) and kurikata (cord knot) are made from buffalo horn — the traditional material on high-grade Japanese swords. Horn is denser and more durable than lacquered wood, and naturally black without requiring paint or coating.