Rocks, Crystals, and Gems (Visual Explorers Series)

Our amazing Earth is waiting to be explored . . . Volcanoes, crystal caves, stone forests, and glow-in-the-dark rocks are just some of the incredible natural wonders you will find in this book. Discover what lies beneath your feet and learn what makes gems so valuable and desirable. Amazing photos and detailed facts will help you learn about the Earth's processes and their importance to you.