Crystal & gem /
Crystal and gem Eyewitness crystal & gem
written by R. F. Symes and R. R. Harding.
- Rev. ed.
- London ; New York : DK, 2007.
- 63 p. : ill. (some col.), col. map ; 29 cm. + 1 CD-ROM (4 3/4 in.).
- Eyewitness books .
At head of title: Eyewitness. Includes wall chart. Includes index.
Describes how crystals form in nature, how crystals are grown artificially, and how they are used in industry. Numerous color photos with text identify the various gemstones.