Need Some Faux Crystal Earrings? Try This Polymer Clay Geode Tutorial

Raising Nobles
by Raising Nobles
14 Materials
2 Hours

Today I have a fabulous polymer clay geode tutorial for you. This tutorial is super easy and teaches you how to make a geode from polymer clay. These crystals are so beautiful and realistic! No one will realize that it’s just clay.

Tools and materials:

  • White clay 
  • Color clay 
  • Translucent clay 
  • Mini rolling pin
  • Shape cutter
  • Chopping card
  • Sculpey liquid clay
  • Small paintbrush 
  • Sharp pointed stick 
  • Gold acrylic paint 
  • Oven 
  • UV resin 
  • Opal glitter
  • Dotting tool
  • Sculpey gloss (optional)
Conditioning and rolling out the white polymer clay

1. Condition base color clay 

Roll out your white base color clay. Get it as thick or thin as you would like. I like to put mine through a pasta machine.

Cutting out shapes in the white polymer clay

2. Cut out the shapes 

Use a shape cutter to cut out the shapes. 

Drawing the geode shape with a dotting tool

3. Trace out your geode shape

Use your dotting tool to trace out your geode shape. You can always add a little more if you make it too thin. 

Chopping up blue polymer clay into small pieces

4. Chop 

Chop up a chunk of your colored clay into really small pieces. 

Mixing colored and translucent clay

5. Combine clay 

Combine the translucent lay and your remaining colored clay and fold them into each other to create a lighter color. 

Chopping up the mixed clay

6. Chop 

Chop up the combined clay into tiny pieces. 

Adding glue to the polymer clay shapes

7. Add glue 

Spread some liquid Sculpey (this is liquid polymer clay inside your geode tracing lines. Adjust the precision with a small paintbrush

Adding a line of color in the center

8. Add color 

Use a sharp, pointed stick to add bits and pieces of the colored clay in between the geode lines. 

You want to create a line down the middle. It does not have to be wide, it can be a thin line.

Adding lighter color around the outside

9. Add the lighter color 

Add in the lighter shaded clay bits all the way around the original line. 

Chopping up the translucent clay

10. Chop 

Chop up plain translucent clay into small bits and pieces. 

Adding the translucent clay to the geode design

11. Add the translucent clay 

Add in the translucent clay around the perimeter of the lighter shaded clay. 

Painting gold around the geode shape

12. Paint 

Use a really thin paintbrush to paint the perimeter around the translucent border. I am using gold acrylic paint. 

How to make a geode from polymer clay

13. Bake 

Bake in the oven at 260°F for about 25-30 minutes. 

Painting UV resin onto the geode design

14. Paint on UV Resin 

You can leave your earrings the way they are when they come out of the oven but I like to add a little shine. 

I like to use a thin paintbrush to paint on the UV resin over the colored parts of the clay. 

Adding opal glitter flakes

15. Add the opal glitter flakes 

Once you paint on the UV resin, add on bits of pieces of the opal glitter flakes. You only need one layer. Let it set outside or under a UV light.

DIY polymer clay crystal jewelry

This is the finished result. If you do not have opal glitter flakes or UV resin, it is totally fine. I just like the extra shine. 

Polymer clay geode tutorial

Polymer clay geode tutorial

For this pair, instead of using opal flakes for the shine, I used a Sculpey gloss/glaze. I just painted it over the colored parts of the clay and then baked it in the oven again after that. 

I hope you have enjoyed this polymer clay geode tutorial! These geode crystals are super-realistic and easy to create at home. Try it out for yourself and you will see. 

Let me know what you think in the comments. 

Suggested materials:
  • White clay
  • Color clay
  • Translucent clay
See all materials

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Join the conversation
  • Trudy Trudy on Mar 22, 2022

    Those look great. A great craft to do with my granddaughters. Thanks for sharing and the step by step instructions.

  • Chris Keating-Ingelse Chris Keating-Ingelse on Mar 23, 2022

    WOW! These earrings are FABULOUS! I have to try this inspiring idea, thank you very much! 🤩