Grow 13 exciting, sparkling crystal specimens made up of single, cluster, and crystal caves (geodes). Students can grow specimens with a diameter ranging from 2 to 8". The sparkling crystals include amber, emerald, quartz, and ruby. Kit also includes crystal-growing chemicals, casting plaster, geode mold, crystal-growing vessels, various accessories, and a 48-page, full-color instruction booklet about the art and science of crystal growing.