Crystal & gem /
Crystal and gem
written by R.F. Symes and R.R. Harding.
- 1st American ed.
- New York : Alfred A. Knopf, 1991.
- 63 p. : col. ill ; 29 cm.
- Eyewitness books .
"A Dorling Kindersley book"--T.p. verso. "Discovering the earth's crystals and gems in close-up -- their creation, beauty, and importance in evryday life"--Cover. Includes index.
Describes how crystals, semiprecious stones, and precious metals form in nature, how crystals are grown artificially, and how crystals are used in industry.