Thread: J-Nat club

There’s no real website or book that does that definitively, partly because many of the signs or ‘tells’ were common to more than one mine. It wasn’t a big place. All of the eastern mines, the ones that produced the finest razor hones, were all within a day’s walk from Kyoto, and as Alex Gilmore has said many times, a lot of the mines were within a good golf shot of each other - so the geological differences or difference in appearances were sometimes quite small.

The only definitive sign that I know of is the black, sparkly, burnt toast skin that’s unique to Nakayama, per Alex.

There are other signs of course, a cloudy structure, namazu-filled lines, the ‘ring’ or kan pattern, etc but several mines shared these, none of them are unique to a specific mine.