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The Eschers and Thuringians at Timbertools aren't even the real thing so I wouldn't try to compare this stone to those. There are a lot of Escher pictures at this forum and they are easy to find :)
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Pretty cool stone!

There's definately a risk involved when trying to find Charnleys, but this is not a bad outcome. My last arrival was a 10" Washita, it looked green in the picture :D

It does look a lot like Neil's Turkey Oilstone, without having one like his I'm not sure if I can tell the difference.

I would have started with 120 grit sanding mesh or sanding paper but you're...

I had it in my watch list. It was a UK only auction otherwise I would have bid on it. I am convinced it is a CF, I actually posted the link in chat 30 mins before the end.

Not that cheap? Any...