This title introduces readers to unique crystals and gemstones. The book explores natural glass formed by volcanoes, gemstones in every color of the rainbow, and crystals that grow in many shapes and sizes. Features include a glossary, additional resources, and an index. Aligned to Common Core Standards and correlated to state standards. Encyclopedias is an imprint of Abdo Reference, a division of ABDO. Glossary of key words Index Table of contents The fascinating world of geology is full of massive rocks, ancient fossils, and colorful crystal formations. In the Geology Encyclopedias series, readers will learn everything they need to know about Earth's rocks, minerals, fossils, crystals, and gemstones, exploring how these materials formed, where they are found, and how they are used today. Aligned to Common Core Standards and correlated to state standards. Encyclopedias is an imprint of Abdo Reference, a division of ABDO.
