What are gems?
By: Bobi Martin
Edition: First edition.
Series: Junior geologist : discovering rocks, minerals, and gems
Publisher: Britannica Educational Publishing in association with Rosen Educational Services
Published: 2016
Place of publication: New York
Language: eng
ISBN-13: 9781680482454; 9781508100508; 9781680483031
Subjects: Gems; Crystals; Juvenile literature
Notes: Includes bibliographical references and index.

Grades 1-4.
Table of contents: title: Glittery gems; title: How do gems form?; title: Some minerals make many gemstones; title: Crystals; title: Gems from plants and animals; title: Synthetic gems; title: Identifying gemstones; title: Mohs scale of hardness; title: Gems sparkle in jewelry; title: Gems at work; title: Famous gems; title: Superstitions about gems; title: Gemstones for all ages.