Groovy Gems

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ABDO, Sep 1, 2010 - Juvenile Nonfiction - 32 pages
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Dig into the world of geology with the Rock On! series! Groovy Gems introduces readers to what gems are and how they form, including mineral gems and organic gems. Chapters discuss crystal systems, imitation and synthetic gems, cultured pearls, how gems are used, and their importance throughout history. Sidebars introduce birthstones, precious metals, and conflict diamonds. Full-color photographs of brilliant diamonds, pearls, geodes, star sapphires, and more will draw in readers while the easy-to-read text breaks down complex concepts. A colorful world map of where gems are found spreads across two pages and an at-home experiment provides the opportunity for hands-on experience. Glossary words in bold, an index, and phonetic spellings for those hard-to-pronounce geologic terms enhance and supplement the text
  

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Contents

Erasmuss Lucky Pebble
4
What Is a Gem?
6
Most Gems Are Minerals
10
Six Cristal Systems
12
Magma Gems
14
Water Gems
16
Living Gems
20
Imitations and Synthetics
22
Cultured Pearls
24
Working with Gems
26
Then and Now
28
Glossary
30
Saying It
31
Index
32
Copyright

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