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No, it had orange spots and waves like mine.

Piet, I know they look similar in photograph, but they are very different. The orange spotted one (which is identical to Adrspach's Idwal which I saw at the Razorcon) leaves a fine finish similar to...

Your one on the far right is most similar to the hone I have which I was told was an ark...would you say its an ark? It definitely not an Idwal or a Tam that I can tell you.

Comparing them side by side, there is some difference, but again the photographs don't pick up what I can see visually. They contrast considerably in person..
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Piet, there is a difference between my Idwall and the supposedly Arkansas, but it is hard to see in photographs. The Idwall is far finer and smoother, while the Ark has more dots in the surface,...

Exactly - those orange/brown spots are not present in Tams. Couple that with any translucency and its more than likely an Idwal.

Piet - I reckon your tam is actually an ark. The test is if there is a slight degree of translucency on the surface, then it is not a tam. i.e. some of the spots appear slightly below the surface. ...

Stephan - thanks, I didn't know that - I thought the stone was found around the lake. And to think I was gona go there one day looking for them lol...I would have been looking in vain!

I almost forgot, I know how much we all love a bit of 'porn,' so here's my Tam.
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In my experience, Tams do not have a surface shine to them, while once the Idwal has been lapped and used a few times it develops one, just like a Charnley does.

Another not so much 'test' but...

Its not a CF. I believe it is a Llyn Idwal. Here's a shot of the end of mine.

They are very good finishers in my experience with 1, and from what I have read in the limited literature available....