Gemmologists' compendium
By: Robert Webster.
Contributors: Jobbins, E. Allan.
Edition: 6th ed. / revised by E. Allan Jobbins.
Publisher: N.A.G. Press; The Crowood Press
Published: 1979
Place of publication: London
Language: eng
Number of pages: 240
Subjects: Precious stones.
Notes: Previous ed., 1970.