Faux Agate Geode Polymer Clay Tutorial

Polymer clay faux agate geode
Polymer clay faux agate geode

In this polymer clay tutorial we will learn how to make a Faux Agate Geode with a hollow druzy covered center.

There are lots of new techniques in this project. It's much easier than it looks and plenty of fun, so I hope you enjoy it.


You will need the following supplies:

  • Polymer clay (Cernit translucent, sapphire, turquoise and antique bronze)
  • Polymer clay (Premo pearl white)
  • A tissue blade
  • A pasta machine
  • An acrylic roller
  • An oven
  • Metal druzy (silver)
  • A ball tool
  • Piñata ink blanco blanco ( or white paint)
  • Translucent liquid clay (Kato)
  • Salt
  • Sandpaper
  • Polishing papers
  • Paint ( yellow ecru, burnt umber, raw sienna, white)
  • A paint brush
  • UV resin (Magic Gloss)
  • UV lamp

How to Make a Faux Agate Geode from Polymer Clay

  • I will be using Cernit translucent, Sapphire, Turquoise and Antique Bronze.
  • To start you need salt - a mixture of coarse and fine, translucent Cernit and Pearl white Premo.
  • Chop a piece of translucent and pearl white finely and mix together.
  • Squish your pieces together well, making sure to eliminate air bubbles.
  • Flatten your ball into a thick slice - about 0.5cm thick.
  • Scoop a good pile of salt into the middle.
  • Fold together to enclose the salt. Try to eliminate as much air as you can.
  • Pinch the edges to seal and trim away the excess.
  • Gently form into a round. Don't worry about folds as long as they aren't too deep.
  • Use a ball tool to smooth out creases.
  • Roll out a sheet of Cernit Sapphire as thin as you can get it.
  • Place your ball on it, seam down, and wrap the Sapphire around the ball trimming away any excess. Cover any gaps with another small piece of Sapphire.
  • Compress your ball and smooth the creases again using a ball tool.
  • Cover the ball with a layer of White Pinata ink.
  • Allow to dry.
  • Then continue covering as follows:
    Translucent, white ink, turquoise, white ink, translucent, white ink, sapphire, white ink and translucent - allowing the ink to dry each time.
  • Roll out a thin sheet of Cernit Antique Bronze, and wrap around as the final layer.
  • Roll your ball in a bowl of coarse salt to texture the outside.
  • Gently mold into an oval shape.
  • Bake for an hour and a half in the salt.
  • Allow to cool until you are able to comfortably handle the clay.
  • Rinse in water to remove the outside salt.
  • While still warm use a sharp blade to slice the faux Agate geode in half.
  • Tip out the salt and wipe it away.
  • Bring over your acrylic paints - a range of browns, black and white, and mix up some browns that you like. Thin down with water if necessary.
  • Use a coarse brush to dab paint on the outside of the polymer clay geode.
  • Allow the paint to dry.
  • Use your finger to clean the salt out of the middle.
  • Use a brush to coat the inside of the geode with Kato translucent liquid clay. Make sure you get into all the nooks and crannies and give it a good coating.
  • Run your finger over the rim to remove any excess liquid clay.
  • Hold your geode over a bowl and tip your silver druzy inside the geode.
  • Run your finger over the rim again to clean it up.
  • Bake again for another hour.
  • Sand the rim using wet/dry sandpaper, starting from a 400 grit to 1200.
  • Polish using polishing papers, starting from 600 to 8000.
  • Buff using a rotary buffing wheel or a soft cloth.
  • Stand your geode up on a raw ball of clay so that the top rim is level.
  • Apply Magic Gloss to the rim.
  • Use a skewer to pull it to the edges.
  • Place in the UV lamp for 30 minutes.
And that's your Faux Agate geode done and dusted. I hope you had fun with that.


Faux Agate Geode Polymer Clay Tutorial

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