Blue Marble National Geographic Glow-in-the-dark Crystal Growing Lab Hands-on science kit.

Grow an awesome glowing crystal with the National Geographic Glow-in-the-Dark Crystal Lab! Easy-to-follow instructions lead you through the crystal growing process, and in is little as 3 days your crystal will be ready for display. Show off your crystal on the included display stand and learn more about crystals in the full-color learning guide. You’ll even receive a genuine fluorite crystal specimen. There’s no better way to inspire a lifelong love of science and geology!