Ive been workin a bunch of KY Blue lately...love it. But I have to say TN Black is favorite. I'm gonna go get some more here in a couple weeks. Where I find it is in a large deposit with lots of freeze lines
so it's real blocky to start but if I can get big enough pieces without fractures its the BEST! Some call it stink rock cause it smells like diesel when you break/grind it. Love me some stink rock!!