Discover with Dr. Cool Ultimate Geode Science Kit, Set of 15 This Ultimate Geode Kit Features 15 Real Geodes Kit Contains 3 Different Types of Geodes so that you can compare different crystal formations Full-Color Adventure guide explains all about how geodes were formed and lets you identify the crystals inside Winner of more awards than any other Geode Kit ever created (see product description for details) Activity booklet contains 10 wonderful puzzles and games for hours of extra fun and learning