Grow crystals using Mono Ammonium Phosphate (supplied) and salt (not supplied) and discover the amazing qualities and features of minerals that make them essential in everyday life. Find out about the factors that influence the shape and growth of crystals and examine the special properties of carbon while constructing models of graphite and diamond. Learn how to organize and catalogue your own collection of rocks and minerals beginning with the samples of pyrite and amethyst included in this kit. Great for school projects and budding geologists! Find out about the factors that influence the shape and growth of crystals and examine the special properties of carbon while constructing models of graphite and diamond. Learn how to organize and catalogue your own collection of rocks and minerals beginning with the samples of pyrite and amethyst included in this kit. Great for school projects and budding geologists!