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And this is what zib answers (thanks again Rich!):

It seems that at least the Woodcraft ones (and, since previously described as corresponding to Woodcraft, the Classic Shaving's too) are the...

The stones in this ad by zib do seem to be same as I found. Let's ask zib to join in and tell us where he got them and what he thinks of their honing qualities.

Ah. '12k Chinese' denominating different kinds of stone might also explain the differing reviews: some exalting, most of them praising but a few outright vituperating (too coarse, 'polluted with...

Hi gilead,

This is I think the contact information you were looking for:
http://www.mjftools.com/en/images/link.gif
More information on their website. Let us know if my lead is correct, and if...