Blueing / dark metal ?


Active Member
I saw a knife today that had a beautiful finish and haven't a clue as to what it actually was.

It was polished to near a mirror finish and was very dark blue, almost black. It was the blade, hilt and I think even the pins. Almost like it was a dark chrome.

It was a hand made knife, in a knife making supply shop. Shouldve just asked but got side tracked.

Is this this simply cold blueing or what?

Thanks in advance.