Thread: Black Thuri?

Updating this thread,

Upon further research this hone is indeed a celebrated water stone from Germany. I had it authenticated by a reputable source and put it side by side by another. I believe Escher made these hones, and the majority of them were glued into a wooden box with the label on the inside cover.

Any comments would be great. Thanks

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Originally Posted by ItalianJoe

Updating this thread,

Upon further research this hone is indeed a celebrated water stone from Germany. I had it authenticated by a reputable source and put it side by side by another. I believe Escher made these hones, and the majority of them were glued into a wooden box with the label on the inside cover.

Any comments would be great. Thanks

There were some around beeing darker (or more beeing black then blue) i owned one, but sold it 3 months ago....