Make Your Own Geode Crystals

Fun or Interesting

Geode Crystals make a lovely addition to your crystal collection, especially when you get to make your own!

Making your own Geode Crystals is simple and fun. It only requires a few ingredients, that can easily be bought on-line (see Amazon links at the end of this article) or at a craft store.

Here is a simple crystal that I made with friends. I plan on adding color to the next batch!

Overview of how to make your own Geode Crystals

Form the geode shell using polymer clay.
Place the geode shell in an oven to harden (instructions on the clay box).
After the shell is hard, coat the inside with glue.
Dust Alum powder over the glue.
Place the coated geode into a mixture of Alum and water (one cup hot water to 1/2 cup Alum) for several hours. Add food coloring if you want.
When the crystals are the size you want, take it out to dry.

That’s it!

The following video, walks you through the process step-by-step.