Unknown Spotted Pre-polisher

Checking the local Hospice store today yielded this spotted pre-polisher. About 1.5" x 5", with a rough back and odd pinkish circular discoloration. The color is on both sides so likely natural to the stone. The pink color is easier to see in the photos with flash. If I had to guess at the grit equivalency is around 6k-7k. I tried a fast test shave, it was not good. :( But it is nice to have a medium-high grit natural.

As purchased
Attachment 175080Attachment 175079Attachment 175078

Inprogress
Attachment 175077Attachment 175076Attachment 175075

If you can shed light on its nature please chime in.

Jonathan

A $10.00 natural,,, nice grab & unique looking stone, thanks for sharing it.

perhaps a Tam-O-Shanter from Scotland. A good score

Good memory RezDog. It is a match for the TOS in the Library's Scottish hones page. Attachment 175125

Thanks

Jonathan

The spotty pattern certainly does look like my little TOS

1+ to the Tam o Shanter

And yet another time please check Henk Bos Grinding and Honing part 1-4...he did really a great Job

http://bosq.home.xs4all.nl/