Crystal Geode
# THA-551101
Grow a beautiful, colorful 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.
WARNING: CHOKING HAZARD - Small parts. Not for children under 3 years.
- Brand: Thames & Kosmos.
- Item Number: THA-551101.
- Recommended for ages : 8 to 11.