Gem-boulder-Opale

Opal Identification

  GEMMOLOGICAL LABORATORY FACT SHEET Chemical composition of Opal: Si0 2nH 20 – Hydrated Silica. • Water content in Precious Opal 3-10%. • Water content…

Magazines Catalogues

Magazines & Catalogues

AUSTRALIAN NATURAL HISTORY, The Australian Museum-Quarterly, 1963. AUSTRALIAN NATURAL HISTORY, Opal Fossils; Flashes From Lightning Ridge, by Alex Ritchie, Vol.21 No.9, 1985. AUSTRALIAN NATURAL HISTORY, Sea…

Opal-serpent-cuff

European Collections

The Crown of the Holy Roman Empire also known as the Crown of Charlemagne was made in the 2nd half of the 10th century and now resides in Vienna at the Schatzkammer Museum of Art History. Originally set with various precious gems including the most legendary stone of Medieval Europe the ‘Orphanus’ Opal as referred to by Albertus Magnus.

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Andamooka-opal

Andamooka

Andamooka – Opal was discovered here in 1930 by tank sinkers Roy Shepard and Tim Brooks. Nearby Andamooka station was named in 1858 by John McDouall Stuart, after an Aboriginal word meaning ‘large waterhole’ which refers to Lake Torrens 20 km away.

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