Rocks, Fossils, Minerals, and Gems

What are the three types of rock and how do they form? Where was the oldest fossil found? What are minerals used for? Why are gems so rare and expensive? Become a Rock Explorer and discover the answers to all those questions! The book is split into four chapters: Rocks, Minerals, Fossils, and Gems. With simple, easy-to-understand text, this book is perfect for young explorers keen to understand the world around them.