This stone has a funny story behind it.  A friend of mine goes to garage sales a lot and got me this slab of green rough at a garage sale.  Green is my favorite color so I started cutting it and noticed it literally foamed up when I cut it.  I've never seen a stone that did that before so I asked an online group about what it could be and it turns out it is asbestos.  The guy that told me said 'You didn't buy that at a recent show I can tell you!'  Anyway, I figured I might as well finish it since I'd done the rough cut.  So this is what asbestos looks like cut into a cab . . .