How accurate is the blue blade finish to the game design?

 Updated Feb 2026

The blue blade finish is one of the most immediately recognizable visual details of Jin Sakai's katana in Ghost of Tsushima, and the replicas in this collection reproduce it through a controlled surface treatment process applied after forging and polishing. The result is a deep, cool-toned blue across the blade's flat, which shifts subtly in different lighting conditions β€” much like the in-game rendering. This finish is not paint; it bonds with the steel surface. That said, like all surface treatments on carbon steel, it benefits from light maintenance oil to prevent any moisture from affecting the underlying metal beneath the finish layer.

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