A rock unique to every state
Mods, please let me know if this is not allowed.
Hello all! I recently got back from a Texas Llanite hunt and it got me thinking. Llanite is unique to Texas. I also just heard ( on this board) about Saffordite which is unique to Arizona.
What's a stone that's unique to every state? I would love to do a collection one day, ideally self-gathered. (Though I'm never going back to Alaska and probably not to Hawaii, so I'll have to get those other ways.).