Geology doesn't get more exciting than breaking open rocks and finding crystal treasures! Geodes can form with a variety of crystals inside and National Geographic has searched the globe to bring you the best variety of geodes. This earth science kit provides a hands-on science experiment that you and your children are guaranteed to love. This is a perfect activity for energetic boys and girls! The included display stand is perfect for showcasing the crystals you find and starting a rock collection, while the learning guide will teach you many amazing facts about geodes!