Make This Epic Geode Skull Halloween Craft in Minutes!

I loved making this geode skull halloween craft. It’s an epic DIY crystal skull that only takes a few minutes!

diy crystal geode skull
This awesomely easy geode skull halloween craft makes the most cool DIY crystal skull.

Geode Skull

Here at Ruffles and Rain Boots, I have a hidden “spooky” side. I mean, I love unicorns and rainbows – but then, I REALLY love all things dark and slightly creepy, too! When I get an idea to crash those two things together like making this geode skull, I can’t help but follow-through.


Such an easy and fun spooky decoration piece, this DIY crystal skull is everything I had hoped. Bright, shiny, dark and spooky, it’s perfect in every way. Snag your paintbrush and let’s get started.

crystal skull craft
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You’re busy, I get it. Pin this to your favorite halloween DIY ideas board on Pinterest and it’ll be here when you’re ready.

photo collage of skull geode halloween craft with text which reads make this easy and fun elegantly creepy geode skull halloween craft

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Tips to Make a Crystal Skull

  • I had a hollow plastic skull from the Dollar Tree last year just sitting around. So, when I had this idea, of course I grabbed that skull and worked with it. You don’t need anything more sturdy than that.
  • For the geode portion of this craft, I used some purple crushed glass vase filler. It’s cheap, goes really far, and has great color to make the crystallized part of your skull shine!
  • Personally, I used some leftover floral foam I had laying around in the closet to fill in the gap on my skull, but you do not have to use that. Regular foam would work, cardboard, or basically anything stiff. Just fill in the gap, closing it up and creating a concave surface for your crystals – no one will be able to see what’s underneath them.
geode skull halloween craft

How Do I Make this Geode Skull?

I’m so glad you asked. Below is our written tutorial. Below is the written and printable tutorial. Let me know if you have any questions on this really cool Halloween crafts using the comments section below.

Yield: 1 Crystal Skull

Geode Skull Halloween Craft

geode skull halloween craft

Such a fun and unique halloween craft, this geode skull is fast and when you have your own crystal skull, the decoration options are endless!

Active Time 40 minutes
Total Time 40 minutes
Difficulty Easy
Estimated Cost $5


  • 1 Hollow Plastic Skull
  • 1 cup Crushed Glass Vase Filler
  • White, Black and Gold Acrylic Paint
  • Floral Foam


  • Paint Brushes
  • Craft Knife or Box Cutter
  • Hot Glue Gun & Glue


  1. Using the craft knife, cut out a roughly round portion of the skull, centered around one eye and discard the cut out bits.
  2. Fit some floral foam inside the skull, securing it with hot glue so that it will not move and generally filling the hole. You will want to leave a concave dip inside, but need to fill in the area to create a solid surface to work with.
  3. Working in small areas of about 3 by 3-inches, place a layer of hot glue on the floral foam, immediately pouring the glass vase filler over the hot glue. Allow the hot glue to cool completely (about 2-3 minutes), then remove the loose vase filler by shaking it gently upside down. Repeat this process until the entire foam area is covered in glass vase filler.
  4. Cover the exposed plastic skull with 1-3 coats of dark charcoal mixture of black and white acrylic paint, then allow it to dry completely. photo collage tutorial of how to make a skull geode
  5. Add an extra line of hot glue around the rim of the skull where the crystal area starts then cover with additional glass vase filler, bringing the geode effect around onto the exterior of the skull a little. 
  6. Place some hot glue in random locations over the face of the skull and top with the glass vase filler for additional spots of crystallization.
  7. Place a thick line of gold acrylic paint around the main area edge of the crystals and allow the paint to dry completely. Then it's time to display your geode skull! photo collage tutorial of how to make a skull geode


For more fun halloween crafts, visit Ruffles and Rain Boots!

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