Help ID This Stone (pic heavy)

Last fall I found this at an antique store; the owner's sticker ID'd it as a barber hone. Before I got around to lapping it, I found a Boss Barber hone and started using that. I just re-discovered this in a drawer. Pics taken when wet. Last shot is what I've called the bottom, but only because it has a couple of chips. Grit seems same on both sides.

It doesn't look like any barber hone I've seen, and indeed does not look synthetic. Can anyone offer an informed guess?

By the way, it was quite hard when I lapped it. Very fine texture. Feels like marble almost. I lapped off the pencil lines with a DMT8c, and it wasn't really throwing off much slurry, like my other barber hones.

Perhaps it's not even a honing stone?

http://i131.photobucket.com/albums/p...n/DSC09318.jpg
http://i131.photobucket.com/albums/p...n/DSC09320.jpg
http://i131.photobucket.com/albums/p...n/DSC09321.jpg
http://i131.photobucket.com/albums/p...n/DSC09319.jpg

What you have there is a chunk of dried out toilet wax.

Ok... I have no idea what it is, but it sure is a pretty stone.
Congrats!

That is a Translucent Arkansas stone. Noviculite ( quartz) and very, very hard and very, very slow cutting. Some guys use it as a finishing stone.