Discover with Dr. Cool Crystal Growing Kit &ndash; Grow Stunning Purple Crystals (Includes Real Amethyst)! FAMILY FUN  Bring the family together with this hands-on science experiment. Kids will love watching these crystals grow in your own home GENUINE AMETHYST Compare a real amethyst crystal (included) to the purple crystals you grow yourself. Add this amethyst to your rock collection SPARK A LOVE OF SCIENCE  Introduce your child to chemistry and geology by growing crystals! Our educational adventure guide (included) is written by teachers A HOMESCHOOL FAVORITE  This complete science kit is the perfect stand-alone school project that boys and girls love! 100% SATISFACTION GUARANTEE - Join the millions of parents who have chosen our award-winning science toys and experience the Discover with Dr. Cool difference!