National Geographic Glow-In-The-Dark Crystal Growing Kit greatoutdoors Slap yourself silly

Slap yourself silly

An engaging barnyard friend like no other

blimps) and helicopters have shaped the development of the modern world

with its vibrant green coloration

National Geographic Glow-In-The-Dark Crystal Growing Kit greatoutdoors Slap yourself sillyMix the crystal growing powder into water, add your seed rock (fluorite), and watch your glow in the dark crystal grow before your eyes! This kit contains nearly everything needed for children to succeed just add boiling water and a glass container! The small magnifying glass allows you to see the crystal formation up close. Also includes a display stand and learning guide. Adult supervision required. Ages 8+