Groovy gems
By: Christine Petersen.
Series: Rock on! A look at geology
Publisher: ABDO Pub. Co.; ABDO Publishing Company
Published: 2010
Place of publication: Edina, Minn
Language: eng
ISBN-13: 9781604537437
Subjects: Gems -- Juvenile literature; Precious stones -- Juvenile literature
Genres: Juvenile literature
Notes: Includes index.
Table of contents: title: Erasmus's lucky pebble; title: What is a gem?; title: Most gems are minerals; title: Crystal systems; title: Magma gems; title: Water gems; title: Living gems; title: Synthetics and imitations; title: Cultured pearls; title: Working with gems; title: Then and now.