Grow your own beautiful crystal geodes with this fun and exciting chemistry experiment. This crystal geode growing kit has enough materials to make two sets of crystal geodes. Enjoy crystal clear science right before your eyes. 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.