T10 Steel Katana with Real Hamon, Blue Ito & Gold-Black Chrysanthemum Tsuba - Marble Saya

The 28.74-inch manganese steel blade is the centerpiece of this koshirae-style katana, hardened to 62 HRC and finished by hand to carry a genuine hamon temper line along its length. That wavy boundary between hardened edge and softer spine is not etched or acid-washed - it emerges from the heat-treatment process itself, so no two blades look identical. The chrome-finish steel catches light cleanly, and the full-tang construction runs the entire length of the handle for structural integrity across the 40.55-inch overall length.

The tsuka is wrapped in dark blue ito over a foundation of real white rayskin (samegawa), with knot paper wraps locking each diamond opening in place. At 10.62 inches, the grip provides enough leverage for a comfortable two-handed hold, while the black samegawa texture prevents the ito from shifting under use. The kashira and fuchi fittings carry through the gold-black finish of the overall koshirae.

The alloy tsuba is one of the most visually distinctive elements of this build. Cast in a gold-black two-tone finish, it features a shaped silhouette with deeply worked chrysanthemum relief across its face - a motif historically associated with imperial Japan. The design creates a strong visual anchor between blade and handle while functioning as a proper hand guard. If you're exploring Marble Katana options with equally detailed fittings, this tsuba style stands out in that category.

The saya is built from hardwood and finished in a matte black lacquer ground, then speckled with multicolor flake - teal, gold, and white particles suspended across the surface for a marble-style effect that reads as dark and luminous at the same time. Real horn koiguchi and kojiri cap the mouth and tip of the saya, the two points that take the most wear during daily handling. A dark blue sageo cord braids through the kurikata and matches the ito for a unified navy-and-gold palette from end to end.

Overall specs: 40.55 in total length, 2.8 lb sword weight, packaged at 3.3 lb shipping weight in a 42.9 x 3.9 x 3.5 in box. This katana suits collectors drawn to traditional koshirae construction with a bold, modern color accent - the marble saya and chrysanthemum tsuba make it a genuinely distinctive piece on any display stand.