That's a tough rock! 
I had this HUGE geode one time, and it took FOREVER to crack it open, but after a few days of some havey hammer hits it busted open
It's probably solid. What an interesting thing!
I had this HUGE geode one time, and it took FOREVER to crack it open, but after a few days of some havey hammer hits it busted open It's probably solid. What an interesting thing!
