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In Rocks, Minerals, and Gems, readers will learn about hundreds of rocks, minerals, crystals, and gems that were forged by the most powerful events in prehistory. Explore what specimens look like and how they're used today--readers can use the information to identify rocks and minerals themselves and open up a spectacular new world.
Find out all about star stones and cat's eyes, megagems, and phantom quartz. Discover which rocks fluoresce, which mineral once poisoned an emperor, and which gems are the rarest in the world!