National Geographic Glow-in-the-Dark Crystal Growing Science Kit by NATIONAL GEOGRAPHIC 0851456006005

GLOWING CRYSTALS - The perfect family activity. Become a scientist and grow amazing crystals that actually glow-in-the-dark! INTERACTIVE LEARNING - There's no better way to learn. Children love exploring the wonders of science through hands-on projects EXPLORE CHEMISTRY - National Geographic's premium learning guide will teach your kids the fascinating science behind this experiment REAL FLUORITE CRYSTAL - You get a real fluorite crystal to compare to the crystals you grow and to add to your rock collection RESPECTED QUALITY - Providing children with the best educational toys, this kit comes with National Geographic's 100% satisfaction guarantee