Sources

  • A JOURNEY WITH COLOUR, Vol I & II, Len Cram (Photos: various patterns)

    AUSTRALIAN PRECIOUS OPAL, Archie Kalokerinos, 1971.(Photos:Hexagonal Harlequin, Pinfire)

    AUSTRALIAN PRECIOUS OPAL, Andrew Cody, 1991. (Photos: Brilliance Scale)

    OPAL IDENTIFICATION AND VALUE, Paul Downing PhD., 2001.

    Crystal, Boulder and Black Gems from the Opaline Collection

    A NEW ERA FOR NOMENCLATURE, Australian Gemmologist. 19, 486-496., Anthony G. Smallwood, 1997.

    OPAL MODULE, GAA COURSE NOTES, Anthony G. Smallwood, 1998.

    THE SMART CHART, Peter Evans, 2005.

    NCJV OPAL GRADING & PRICING WORKSHOP, Ralph Pownall, 2011.

    Click here to download the pdf of the Opal Body Tone and Patterns Chart (courtesy of Opal Association - www.opal.asn.au)

    Sources : 

  • "Opal in South Australia", Mines & Energy Resources, SA

  • "Opal", Qld Dept. of Mines & Energy

  • "Black Opal: A comprehensive guide to cutting and orientation", by Greg Pardey, GP Creations, 1999.

  • Click here to download the pdf of the Opal Body Tone and Patterns Chart (courtesy of Opal Association - www.opal.asn.au)

    Sources : 

  • "Opal in South Australia", Mines & Energy Resources, SA

  • "Opal", Qld Dept. of Mines & Energy

  • "Black Opal: A comprehensive guide to cutting and orientation", by Greg Pardey, GP Creations, 1999.

  • "Opals", by Fred Ward, Gem Book Publishers, 1997.

 

A collection of our white opals.

© 2016 by A&S Opals. Powered by Ole' Vision.

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