White Cliffs Opal Field- A report by NSW Geological Survey

Report by Gary Burton et al on White Cliffs Geology

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Chemistry Techniques used in researching opal - Neville Curtis

Chemistry Techniques used in researching opal - Neville Curtis

A discussion on Ethiopian Opal from our french colleagues.

A discussion on Ethiopian Opal from our french colleagues.

African Opal Unearthed

African Opal Unearthed

Play-of-Colour Opal from Wegel Tena, Wollo Province Ethiopia

Play-of-Colour Opal from Wegel Tena, Wollo Province Ethiopia

The Origin of Digit patterns

The Origin of Digit patterns

Ethiopia: A new source of Precious Opal

Ethiopia: A new source of Precious Opal

WHITE CLIFFS-CRAM

WHITE CLIFFS-CRAM

The White Cliffs Royal Commission

The White Cliffs Royal Commission

White Cliffs Opal Field- A report by NSW Geological Survey

White Cliffs Opal Field- A report by NSW Geological Survey

White Cliffs Opal Fields a commentary by Gwen Rowe

White Cliffs Opal Fields a commentary by Gwen Rowe

OPAL CARVING-DANIELA L'ABBATE

OPAL CARVING-DANIELA L'ABBATE

EVALUATION OF CARVED LIGHTNING RIDGE BLACK OPAL

EVALUATION OF CARVED LIGHTNING RIDGE BLACK OPAL

HISTORICAL FOLKLORE-KOSMINSKI

HISTORICAL FOLKLORE-KOSMINSKI

Trace Elements in Black Opal

Trace Elements in Black Opal

More on opal and cracking

More on opal and cracking

New information - Slovakian opal

New information - Slovakian opal

Porosity of some opaline siliceous materials

Porosity of some opaline siliceous materials

The Role of water in the cracking of opal

The Role of water in the cracking of opal

AN Historic document: the Occurrence of Opal at Lightning ridge and Grawin.

AN Historic document: the Occurrence of Opal at Lightning ridge and Grawin.

An analysis of Opal Polymorphs: Opal-AG, Opal-AN and Opal-CT by NMR

An analysis of Opal Polymorphs: Opal-AG, Opal-AN and Opal-CT by NMR

A Review of the mineralogical opal classification

A Review of the mineralogical opal classification

SYNTHETIC OPAL

Trace Elements in Australian Opal-1

Trace Elements in Australian Opal-1

Historical opal literature - an extract from Dana's Mineralogy

Historical opal literature - an extract from Dana's Mineralogy

An Extract from the Thesis of Boris Chauvrie

An Extract from the Thesis of Boris Chauvrie

GILC and LMHC decisions for Hydrophane opal nomenclature

GILC and LMHC decisions for Hydrophane opal nomenclature

Opal Historical SA Trade standards (1979)

Opal Historical SA Trade standards (1979)

Opal Nomenclature - AG1997

Opal Nomenclature - AG1997

The Story of European Precious opal from Dubnik

The Story of European Precious opal from Dubnik

The White Cliffs Opal Field, NSW

The White Cliffs Opal Field, NSW

Science, OccurrencesAnthony SmallwoodOctober 23, 2023