The Encyclopedia of Gemstones and MineralsBook - 1991
This work offers information on the properties/values of over 200 rocks, stones, jewels and other natural substances. From amber to zinc, and from diamond-edged blades to orthoclase-based porcelains, details about characteristic form, specific gravity, symmetry system, refraction, location, use and commercial value are provided.
Publisher: New York : Facts on File, c1991.
Characteristics: 303 p. :,ill. (some col.), map ;,31 cm.
Alternative Title: Gemstones and minerals.