Sinkankas' Standard catalog of gem values
By: John Sinkankas.
Publisher: Geoscience Press; Geoscience Press,U.S.
Published: 1988
Place of publication: Prescott, Ariz
Language: eng
Number of pages: 286
Subjects: Gems -- Catalogs.; Precious stones -- Catalogs.
Other titles: Standard catalog of gem values.
Notes: Bibliography: p. 274-276.
First published in 1968 under title: Van Nostrand's standard catalog of gems.
Includes index.