National Geographic's Crystal Growing Kit brings you a fun and fascinating science experiment. With a learning guide packed full of interesting crystal facts and a real specimen included, you get the most comprehensive crystal growing kit on the market! This science kit includes: Growing powder, seed rock, stir stick, real crystal, National Geographic's learning guide with instructions. This is the perfect project for kids of all ages and serves as a great introduction to geology and chemistry. This kit from National Geographic will spark a love of science in your child that will last a lifetime.