How to make Geodes

We have this lovely book all about rocks. A rock is lively by Diana Hutts Aston. It’s all about the ingredients that make up rocks. It has some beautiful pictures in it, in an attempt to recreate some of this beauty we made some Geodes. Geodes are rocks with sparkling crystals inside them.

We made our geodes by slightly heating up some water and dissolving as much salt as possible.

Processed with VSCO with s1 presetWe mixed the salt solution with food colouring inside some egg shells and left them. It took many days for our geodes to develop

The best geodes that we created were the egg shells in pots that started off with the most salt solution in.

Processed with VSCO with s1 presetWe loved how the molecular structure of the salt changed and in some instances created what looked like perfect squares.

Processed with VSCO with s1 presetWe’d love you to share with us about any fab science experiments you’ve done, please comment below. 🙂