Thread: Could this be an Escher/thuringian stone?

Hi Everyone.
Just want to say how much I like this forum - been reading for a while and so now this is my first post. I've been collecting my gear slowly but surely and the other day I got two rather old hones from a friend who sells vintage collectables like old gas pumps and classic signage etc.. He happened to have these two stones which he got with a bunch of other items from an old barber shop that had closed down a good few years ago. Anyways, he basically gave these to me, and I'm pretty much certain that one is a Thuringian/german natural stone, as it is in a wood box with a blue label on the inside written in German about how wonderous the stone is and how it should stay clear of oil. It also looks just like the other Thuringian stones I've seen here on the forum - dark grey with a very fine mirror like smoothness to the touch.

The other one though, is what this post is about. It's a light grey/green colour and also comes in a wooden box. There is a place for the slurry stone which didnt come with it, and there is also a little label on the inside. I'm just not sure what kind of stone this is, I really think it's an Escher but just not sure, what colour do Eschers come in? When I lapped it with 600 grit water paper, the surface is really smooth as glass, smoother even than the German stone I just mentioned. The slurry it produced is very silky and clay-like, it also has a real nice earthy smell - like just after it rains.. Any help will be greatly appreciated..