Fossils or Rocks!!

I have found a interesting rock before. It looked like a blue crystal. I found it on the beach in Alabama. I found it all by myself. But when it was time to go back to my condo I just burried it in the sand so my brother would not take it. Like when you find a pretty rock or something that was cool you would think that your brother or sister would want to take it and say that they have found it instead of you. So that is why I burried it in the sand. That blue crystal was really pretty or I think it was a crystal. Let's just call it a pretty rock okay . Good.