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That explains the inclusion on the blue side. It gives me no problems honing on it, and by far, an impeccable finisher. A flea market find, a mere $15 :rock:

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Here's a few other pics of the B/G

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Dry
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Wet
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Here is my collection of Thurigan, hones.

Though, not labeled. By the information I found from a Escher site, the first one on the left would be a, blue/green barbers jem. That is from their...

I can't say its an Escher, for sure. But it is a Dark blue, Thurigan hone.

I have one similar to yours. Its in its original box, without a slurry stone.

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