Interesting that it turned out to be an inkwell, it does look granitic from the picture so its interesting how they managed to carve that.
Who gives a schist?
Sorry just had to sneak that one in being a geologist. But do have to mention that Granite Rocks.
Time to get me hammer and coat me thinks before the schist hits the fan for the bad geology puns.
I'm no geologist, and didn't think to ask the state archeologist, but it looked like our local igneous rock. We are "the Granite state". (We actually have more Schist than Granite, but who wants to be "the Schist state"?)
Who gives a schist?

Time to get me hammer and coat me thinks before the schist hits the fan for the bad geology puns.