Grow your own beautiful sparkling crystal geodes inside a crystal Shell with this fun and exciting chemistry experiment. Enjoy the moment when you reveal your crystal geode. Includes a specially designed container for growing quality crystal geodes and contents for making two complete sets of crystal geodes. Crystals are used in a variety of modern devices like video cameras, watches, and microchips. Adult supervision is required. This set contains chemicals that may be harmful if misused. Read all cautions on individual containers carefully. This item is recommended for ages 10 years and up.