Four Treasures Reference Database
Record No. 16921
A Field Guide to Australian Opals
Book
O'Leary, B. (1977) A Field Guide to Australian Opals. Melbourne, Gemcraft, 159 pp.
ISBN/ISSN: 909223017 | Sinkankas/Born No.: 4859 | RWHL*
gems, opal, Australia, black opal, white opal, boulder opal
Probably the best book available that shows the various types of Australian opals, particularly the different patterns of color play. Highly recommended.