How is the blue color on these blades actually produced?

 Updated Mar 2026

The blue tone is not applied as a coating or finish. It develops through the metallurgical properties of high-manganese steel, which naturally produces cooler chromatic tones during the heat-treatment and quenching process. Some blades also undergo controlled oxidation after polishing, which draws out blue-gray surface hues by allowing a thin, stable oxide layer to form. Because the color is rooted in the steel's own chemistry and surface structure, it does not peel, chip, or rub away under normal handling and display conditions. This is fundamentally different from blued carbon steel finishes or painted decorative pieces, making it a more durable and collectible-appropriate result.

Popular Products

15% OFFblack blade katana
179.00 USD
209.00 USD
20% OFFkatana set
249.00 USD
309.00 USD
20% OFFgolden katana
179.00 USD
219.00 USD
15% OFFwakizashi sword
139.00 USD
169.00 USD
15% OFFninja sword
149.00 USD
179.00 USD
15% OFFsamurai sword
179.00 USD
209.00 USD
20% OFFghost of tsushima katana
239.00 USD
299.00 USD
20% OFFkatana sword
159.00 USD
199.00 USD
20% OFFred katana
179.00 USD
219.00 USD
20% OFFjapanese sword
129.00 USD
159.00 USD
15% OFFgolden katana
169.00 USD
199.00 USD
15% OFFmodern katana
179.00 USD
209.00 USD
15% OFFblack blade katana
179.00 USD
209.00 USD
20% OFFkatana set
249.00 USD
309.00 USD
20% OFFgolden katana
179.00 USD
219.00 USD
15% OFFwakizashi sword
139.00 USD
169.00 USD
15% OFFninja sword
149.00 USD
179.00 USD
15% OFFsamurai sword
179.00 USD
209.00 USD
20% OFFghost of tsushima katana
239.00 USD
299.00 USD
20% OFFkatana sword
159.00 USD
199.00 USD
20% OFFred katana
179.00 USD
219.00 USD
20% OFFjapanese sword
129.00 USD
159.00 USD
15% OFFgolden katana
169.00 USD
199.00 USD
15% OFFmodern katana
179.00 USD
209.00 USD

Explore Our Collections