Mooney Fine Mineral
Enhydro "Keokuk" Geode - With Water
Some water has been taken for future scientific study but this quartz, calcite, and chalcopyrite lined geode from near Alexandria Missouri had water in it. You can see it being cracked in this video: https://youtu.be/l9SqJPVSl0s
If you want an explanation of how geodes form you can see it in this video: https://youtu.be/jc1OHbvAayQ
Disclaimer: Don't drink the water. I am not liable for what will likely happen afterwards.