I wanted to add (and I don't mean anything by it) it's not a Maryland piece. Not that it matters. Didn't someone post what they thought it was- and it wasn't a fossil (maybe that it wasn't an animal)? Was it Gunsil? He works with that sort of rock all the time making jewelry. There was a name for what this is and I can't remember. Very cool looking regardless Dendrite. That's what he said. I didn't realize this was a x2 post.