The buying guide to black opals
By: [written by Bill Jewell with the cooperation of Grant M. Pearson]
Contributors: Pearson, Grant M.; Australian Gem Industry Association.; New South Wales. Dept. of Mineral Resources.
Publisher: Dept. of Mineral Resources
Published: 1996
Place of publication: [Sydney]
Language: eng
Number of pages: 18
Subjects: Opals -- Australia.; Opals -- New South Wales.
Notes: Text in English and Japanese.

At foot of cover title: The Australian Gem Industry Association Limited.

"... partly based on material supplied by P.R. Evans with comments from the trade" -- T.p. verso.