The geodes in The World’s Best Geode Kit are millions of years old and were formed when prehistoric volcanoes erupted. Break open these real geodes to discover the incredible crystal formations hidden inside. The kit includes 15 superior quality geodes from 5 different mines across the globe so that you can experience an incredible variety of crystal formations. You could find quartz, fluorite, calcite, or even amethyst inside these geodes. Plus you’ll also get to explore some of our newest Gold Rush geodes. Geodes are an amazing natural phenomenon, and cracking them open is a thrill for all ages. The kit also includes safety goggles, a full-color information guide and booklet with 10 fun activities. Science doesn’t get any cooler than this.