• Brand: National Geographic • Age :3 • 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