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Aracic, S. Rediscover Opals in Australia. Underwood, Qld: Kingswood Press Pty Ltd, 1999. Print.
Cody, A. Australian Precious Opal: a guide book for professionals. Melbourne: Andrew Cody Pty Ltd, 1991. Print.
Ratliff, D. Boulder Opal. Cairns: Opal Press, 2014. Print.