20 Things You Didn't Know About Rocks and Gems

Rocks don't sound very interesting, right? Wrong! These pieces of Earth can tell us a lot about the world we live in. From sparkling diamonds to steady, solid granite, this book provides many interesting facts about the bones of our world. Did you know that some rocks can float? Or that there are space rocks on Earth? Learn more from the detailed text, photographs, and graphics in this fun book.