Crystal & gem /
Crystal and gem.
written by R.F. Symes and R.R. Harding.
- 1st American ed.
- New York : Knopf : Distributed by Random House, 1991.
- 63 p. : col. ill. ; 29 cm.
- Eyewitness books .
Includes index.
Booklist
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.