num_pages: 72
description: Describes how crystals form in nature, how crystals are grown artificially, and how crystals are used in industry. Numerous color photos with text identify the various gemstones.
language: English
title: Crystal & Gem
titlecomplete: Crystal & Gem (DK Eyewitness Books)
genres: Middle Grade, Childrens, Science, Reference, Education, Teen, Picture Books, Geology, Nonfiction
ratings_count: 227
series: DK Eyewitness Books
publisher: DK Children