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I googled Hindostan stone, and not a single photo looks any thing like mine.

One thing that makes me sold on the D.B. Is how white it is when dry. I can put a diamond lap to it. And it is like...

I should have been more clear and updated my first post, more testing (using my teeth to feel the grit). I determined this is closer to 4k ish. +/- 2k

Thank you for the interesting read.

Here are a few more out in the sun... If its not a Dalmore , what could it be?
It still has some big scratches in the side, because my front porch is my fastest lapper. :)
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Scottish Dalmore Blue. I like that Piet, and after spending several hours cleaning it up, with several hours more to go. These are the photos. With different angles, and different lighting,,
So...

I dont have any confirmed thuri's. But I have some German labled stones that are probably thuri.. This feels just as fine grit, but the slurry I think is to white, and it is harder to create a...

Edit: thanks to Piet I have changed the title of the thread and the mystery has been solved.

Picked this up at the antique mall for a couple dollars... At first I thought I was total junk. But...