T10 Carbon Steel Katana with Real Hamon - Dark Blue Ito, Starry Night Hardwood Saya, Dragon Tsuba

The blade on this katana is forged from T10 carbon steel and hand-finished to reveal a genuine hamon along the edge - a natural temper line that traces the boundary between hard edge steel and the softer spine. The chrome-toned surface catches light cleanly across its 40.55-inch length, with a 1.259-inch width and 0.275-inch spine thickness that gives the geometry a sleek, traditional taper toward the kissaki. Total assembled weight is 2.8 lbs, well-balanced for display or handling.

The handle is built on a full-tang core, with real white samegawa (ray skin) laid over the wooden tsuka as the base layer. Dark blue ito wraps over it in the classic diamond-lozenge pattern, the white samegawa peeking through each opening in sharp contrast. The binding is tight and even, characteristic of the koshirae style this piece follows throughout.

Separating handle from blade is a black iron tsuba shaped around carved dragon imagery - flowing relief work covers both faces of the guard, with a small gold mon medallion inset at the center. The dark metal and gold accent read clearly against the chrome blade and set the tone for the sword's deep, jewel-like color palette. If you're exploring other guard designs, browse our Flower Theme Tsuba Japanese Samurai Swords collection for contrast.

The saya is crafted from hardwood and finished in black lacquer as the base, then decorated with a scattered multi-color splatter - gold, red, orange, and white flecks distributed across the full length like a starry night sky. A dark blue braided sageo ties at the throat with structured decorative knotwork, pulling the entire color scheme together. The fit between blade and saya is snug, protecting the edge when sheathed.

At 40.55 inches overall and 2.8 lbs, this katana sits in a classic full-size proportion with a presentation-ready koshirae finish. The combination of real hamon steel, dragon iron tsuba, and the starry lacquered saya makes it a strong centerpiece for collectors drawn to bold, cohesive Japanese sword aesthetics. For more options in this style, see our Cool Katana collection.