Re: IDing this rock
I wouldn't call it "plume agate." I don't see any plumes (feathery type patterning) in the piece. I think what you have is a colorful piece of jasp/agate (jaspery agate) that has marcasite or pyrite inclusions. It would most likely cut a very pretty gemstone though.
From Rick - August 05, 2014 at 05:56:37