National Geographic Purple Crystal Growing 1Pc Villa Market Amazon.com: NATIONAL GEOGRAPHIC Purple Crystal Growing Lab DIY National Geographic Purple Crystal Lab Kit Educational Play Sets National Geographic Blue Crystal Growing Lab DIY Crystal Creation. About this item DAZZLING CRYSTALS kids become scientists by growing amazing purple crystals with this classic educational science kit INTERACTIVE LEARNING Theres no better way for your child to explore the wonders of science than through a hands on crystal growing science experiment EXPLORE CHEMISTRY National Geographics premium learning guide will teach kids the fascinating science behind this experiment REAL AMETHYST CRYSTAL Includes a real Amethyst crystal for your rock collection; compare the Amethyst to the purple crystals you grow with this kit SET CONTAINS crystal growing powder, seed rock, stir stick, National Geographic learning guide with instructions and real amethyst crystal From the manufacturer