Thames and Kosmos Crystal Geode
Grow a beautiful crystal geode, a hollow rock with crystals inside it, by first molding a plaster shell and then filling it with a crystal-forming solution. Learn about geological crystal formations.
FEATURES
- Grow a beautiful crystal geode, a hollow rock with crystals inside it
- First mold a plaster shell and then fill it with a crystal-forming solution
- Learn about geological crystal formations
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