National Geographic - Red Crystal Growing LabLearn all about crystals and grow your very own! National Geographics Calcite Crystal Growing Kit brings you an unparalleled crystal growing experience. With our full color learning guide packed with fascinating crystal facts and a real calcite specimen included, you get the most comprehensive crystal kit on the market! Contents: Crystal Growing powder, seed rock, stir stick, real calcite crystal, National Geographics learning guide, and instructions.