National Geographic Crystal Garden

National Geographic Crystal Garden. Watch in wonder as crystals grow from the branches of the included evergreen and cherry trees like magic; you’ll see the first crystals in minutes and trees will be fully covered in as little as 6 hours making a fantastic crystal display. Color each tree any way you’d like with the 5 watercolor pens in the kit and grow crystals in the colors you’ve chosen this crystal growing activity also comes with a genuine geode specimen as well as a full-color learning guide packed with fascinating facts about crystal. Because the crystals absorb the ink from the markers and grow in the colors drawn, this kit combines the science of a crystal-growing lab with the creativity of an art project, making this a well-rounded activity for girls and boys.