ScienceWiz - Igneous Rock Samples AWARD WINNING ScienceWiz curriculum is designed to teach kids science in an intuitive and natural progression Discover the basics of geology with this set of igneous rocks from the award winning science project creator, Science Wiz Each packet includes one sample each of basalt, granite, obsidian, pumice, and cinder Perfect for rock identification practice Intended to be parts for use with science projects, science fairs, etc. and are provided with minimal to no operating instructions