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12-06-2016, 02:09 AM #1Senior Member
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Stone id
Bought off the bay. It was billed as a Thuringen. The seller seemed knowlegable. Now wondering.
(From ebay)
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12-06-2016, 02:39 AM #2Senior Member
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It looks like a slate to me.
Saying that it looks home cut. So it might be from the correct region, even the correct rock face. Just not graded anywhere near as well as what we see as hones. To me that rock looks frost damaged. I have been known to be wrong on many occasions And this might be one of them. There are others on here with a lot more knowledge than me.hatzicho likes this.Real name, Blake
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12-06-2016, 05:50 PM #3Preserver of old grinding methods
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Doesn't really look like a thuri to me. Color and texture are somehow different from all what I saw so far.....
Can you make a detailed picture of the lower part where the stone is rough. How hard is the stone? Do you have other thuris to compare?
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12-06-2016, 06:12 PM #4Senior Member
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Side
bottom
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12-06-2016, 06:15 PM #5Preserver of old grinding methods
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Thanks - but the pictures won't shift it any further in the area of old thuringian whetstones..... sorry don't know!
Looks like slate yes - but not typical for thuringian waterhones.
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12-06-2016, 06:20 PM #6Senior Member
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top wet
bottom wet
The stone is quite hard, harder than my cotti or Nortons. More scratch than a Norton 8k too. No other Thuris to compare to, in my hands but some blue green Thuris look similar. Most I've seen pictures of are fully shaped though. I'm not sure if Thuri has a sediment layering. One side of this one does the other looks more crystalline.
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12-06-2016, 06:25 PM #7Senior Member
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I'm no geologist but under 120x it looks crystaline. I can't see any individual crystals though.
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12-06-2016, 06:44 PM #8Senior Member
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I agree with Peter on this one. Doesn't look Thuri-esque to me either.
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12-06-2016, 07:56 PM #9Senior Member
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I have no idea. OTOH, if it works into your progression somewhere that is more important and what to call it. If it doesn't fit in, oh well, on to the next .......
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12-06-2016, 08:17 PM #10Senior Member
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I gave it a go yesterday. Super sharp but not a finisher. My novice guess would be somewhere between 2-4k. After the trial I gave it a few laps on Coti with lather. See how that works. The coti scratches are much more polished.
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