I got a rock

Bachan and Jichan gave me a rock for my birthday. It's a special rock, called a geode. It looks like this when it's round:



And then you're supposed to crack it open. I put the geode inside a sock. Then I dropped it from the balcony in our backyard. It didn't break, so Daddy took a hammer to it. We all wore sunglasses to protect our eyes (because this is science!). He bashed it open. And then you get chunks like this:



And pretty crystals!



And curvy layers that look like rolling hills.



I like to put it back together like a puzzle.

Thanks Bachan and Jichan!