An Extract from Len Cram’s a journey with colour
Read More
AN article written in French from our colleagues in the French Gemmological Association
Read More
Paul Downings article on Ethiopian Opal
Read More
A journal article from Gems and Gemmology on the occurrence of Precious opal in Ethiopia
Read More
AN article regarding the special digit patterns in Ethiopian Gem opal
Read More
An excerpt of the history of White Cliffs
Read More
The White Cliffs Royal Commission
Read More
Quarterly Notes NSW Geological Survey-White CLiffs
Read More
A view of the town of White Cliffs
Read More
Daniela L’Abbate, specialist opal carver.
Read More
Information and procedures for valuing carved opal
Read More
An extract of the chapters relating to opal
Read More
A discussion paper form Bruce Dickson regarding trace elements in Australian black opal
Read More
Boris Chauvire and colleagues elucidate some information regarding opal cracking
Read More
An updated article regarding Slovakian Precious opal jewellery
Read More
A discussion on the porosity of siliceous materials including opal
Read More
A discussion from the Australian Gemmologist regarding opal cracking
Read More
An historical discussion of the geology and occurrence of opal at Lightning Ridge
Read More