Obsidian Katana - 黒魂刀

Handcrafted Obsidian Katana in black T10 tool steel — matte black blade, zero reflections. Full tang, sharpened. Copper-alloy tsuba in glossy black, bronze habaki with hexagonal honeycomb openwork, cream cotton ito over black imitation rayskin, cream lacquered saya with Edo-period dragon-warrior illustration in purple and red, bronze koiguchi and kojiri, cream sageo. Includes wooden display stand with 武 (Bu — "Martial") kanji. Black blade, cream saya, bronze honeycomb — three elements that should not work together, yet do.

Obsidian Katana Specifications

Black T10 Blade — Obsidian Finish

The blade is forged from T10 tool steel — tungsten-content high-carbon reaching 60-62 HRC — with a matte black finish that absorbs light instead of reflecting it. Obsidian (volcanic glass) is nature's sharpest material; this blade takes the name because the black surface and functional edge mirror that concept. The non-reflective finish creates visual weight: where polished steel catches the eye with brightness, the Obsidian katana commands attention through absence of light. The T10 beneath provides the same premium hardness and edge retention as our Kumo, Shirokuro, and Ouryu — the black is surface, not substance.

Bronze Honeycomb Habaki

The habaki is the visual anchor of this blade — bronze with hexagonal honeycomb openwork cut into its surface, the geometric pattern creating three-dimensional depth between the black blade and black tsuba. The honeycomb is the only warm metallic accent visible from the front, and it draws the eye precisely because it sits between two dark elements. Bronze koiguchi and kojiri on the saya echo the habaki's warmth, connecting blade fittings to scabbard hardware across the cream body. The blade has the most ornate habaki in our catalog — a component most blades treat as functional hardware, here elevated to focal point.

Cream Saya — Edo Dragon Illustration

The saya is cream lacquered wood with a hand-painted Edo-period illustration — a warrior or dragon scene in purple and red tones wrapping the scabbard's midsection. The cream base provides the light surface the illustration needs to read clearly, and the purple-red palette creates the only color on the entire sword. When sheathed, the Obsidian katana presents its cream illustrated saya; when drawn, the matte black blade emerges — light into dark, art into weapon.

Cream Handle — Inverted Contrast

Cream cotton ito wraps over black imitation rayskin — the inverse of the standard black-ito-on-white-rayskin found across most of our catalog. The light wrapping against dark rayskin creates the same diamond pattern but in negative: dark diamonds on a cream field. The cream handle connects visually to the cream saya, and the black rayskin connects to the black blade, the sword creating a continuous conversation between its two palettes from pommel to tip.

Obsidian — Volcanic Shadow

Obsidian is volcanic glass — formed when lava cools too quickly for crystals to form, creating a material sharper than surgical steel at its fracture edges. Ancient warriors worldwide used obsidian blades because the material's natural sharpness required no metallurgy. The Obsidian katana channels that primal edge: T10 steel performing the cutting, black finish carrying the volcanic aesthetic. Browse our collection to compare with the Full Black Katana (all-black 1060) — the Obsidian uses T10 and adds the cream saya, honeycomb habaki, and Edo illustration the Full Black deliberately omits.

Display

Ships with a wooden stand bearing 武 (Bu) kanji. The cream-and-black contrast makes the Obsidian a natural centerpiece — the light saya and dark blade create visual drama from any angle. Pair with the Full Black for a monochrome comparison (all-black vs black-and-cream), or with the Kagekuro (Sanmai, all-black) for a premium black blade duo.

Frequently Asked Questions

Is the blade actually obsidian?

No. The blade is T10 tool steel with a matte black finish. The name "Obsidian" references the volcanic glass's black appearance and natural sharpness. The steel beneath the finish is functional high-carbon T10.

What is the honeycomb habaki?

The bronze habaki features hexagonal openwork cut into its surface — a honeycomb pattern creating three-dimensional depth and warm metallic accent between the black blade and black guard. It is the most ornate habaki in our catalog.

Is this Obsidian katana sharp?

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

What is the illustration on the saya?

The cream saya features a hand-painted Edo-period scene — a warrior or dragon illustration in purple and red tones. The illustration references traditional Japanese ukiyo-e art of the Edo period (1603–1868).

What does the kanji on the stand mean?

The kanji 武 (Bu) means "martial" or "warrior" — the same character found in bushido (武士道, "way of the warrior"). It appears on several of our display stands.