Get this National Geographic crystal growing lab to grow some amazing crystals at home. Perfect for young science enthusiasts, this is a brilliant way for your kids to learn and have fun. This interesting science lab will make a great birthday gift for your child. Details: Purple12 growing labsIncludes instructions For ages 8 and upPack Contents: Crystal growing powder Seed rock Stir stick Real amethyst crystal National Geographic's learning guideWARNING: This set contains chemicals that may be harmful if misused. Read cautions on individual containers carefully. Not to be used by children except under adult supervision.