num_pages: 63
description: Full-color photos. Learn about the formation and practical uses of crystals, semiprecious stones, and precious metals.
language: English
title: Crystal and Gem
titlecomplete: Crystal and Gem
genres: Science, Reference, Middle Grade, Teen, Nonfiction, Childrens, Education, Geology, Picture Books
ratings_count: 228
series: DK Eyewitness Books
publisher: Knopf Books for Young Readers