Practical gemmology
Subtitle: a study of the identification of gemstones, pearls, and ornamental minerals
By: by Robert Webster.
Edition: 6th edition.
Publisher: N.A.G. Press; The Crowood Press
Published: 1976
Place of publication: Colchester
Language: eng
Number of pages: 209
Subjects: Precious stones.
Notes: Previous ed., i.e. 5th ed., 1973.

Includes index.