Chemistry Techniques used in researching opal - Neville Curtis
A discussion regarding the techniques available for researching the structure of opal with reference to the processes, sample preparation and a discussion of the results that may be achieved, provided by Neville Curtis from the Flinders University in South Australia.
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A journal article from Gems and Gemmology on the occurrence of Precious opal in Ethiopia
In this Article, Neville Curtis and his colleagues discuss new information regarding the mineralogical varieties of opal
The article in this issue of the Australian Gemmologist was for its time a ”land breaking” discussion on opal nomenclature.
The article in this issue of the Australian Gemmologist was for its time a ”land breaking” discussion on opal nomenclature.
