Thread: Identifying natural stone

Hello to the board, I trust everyone is well.

I found this stone in my father's garage, I think it came from his friend's brother who passed away and was a craftsman of some sort.

Any ideas what kind of stone it could be? Hard to judge precise fineness, I haven't put a razor on it yet, but it feels pretty fine. It slurries easily to a fine light grey slurry, and is fairly soft, it was easy to lap some deep scratches out of it. I am in the UK, and the stone is 8" x 2" x 1"

Grateful for any thoughts!