A couple of week ago we decided to make our own geodes, loosely following the directions from Those Northern Skies.
I had a hard time, however, gathering enough eggshells, so I decided to try them with plastic eggs. I didn't know whether they would form on the plastic, but I thought it was worth a try.
Green and blue eggs are Epsom Salts, purple and orange are table salt, and yellow and pink are Borax.
A week and a half later, our geodes are crystallized and ready to show you.
|Open them up and this is what you see.|
|These are the Borax crystals.|
|These are the table salt crystals.|
|These are the Epsom Salts crystals.|
|The one side of the Epsom salt "geode" made one very large crystal.|
|The rest of the Epsom salt crystals were like this.|
|We also put some Borax crystals in a regular egg for comparison. The crystals were thicker in the real egg, but even so, I thought the plastic eggs were successful and the boys like pretending they are geodes and "cracking" them open.|