|Grow three chemically different types of crystals that exhibit not only different colors, but also different crystal shapes. Learn about rocks and the minerals that form them. Dig deeper, and discover the fascinating crystal structures of these minerals. Investigate the geologic rock cycle and learn how the three main categories of rock are formed, altered, destroyed and formed again. Much more than just a crystal growing kit, this experiment kit teaches you the chemistry of crystals and the geological science behind rock formation.|
This kit is thoroughly tested and safe. Over one million units of this kit have sold worldwide.
By Thames & Kosmos