Peter Christianos
Australia was very shy of her unique Black Opal until America hallmarked it. Tully C. Wollaston – Opal: The Gem of the Never Never, 1924. One … Read more
Opal & The Russian Masters Both Fabergé of Saint Petersburg and Marchak of Kiev were appointed jewellers to the Imperial court of Russia, they were … Read more
A HISTORY OF JEWELLERY: 1100-1870, Joan Evans, 1970 (2nd Ed.). (Drake’s Sun Jewel c.1579; Mlle Mars) A JOURNEY WITH COLOUR Vol II Part B, A … Read more
A timeline of Opal. From the geological timescale onto human times. From the ancients, through the Middle Ages and to the present day. A summary of key moments for the most phenomenal gemstone.
A CENTURY PLUS OF OPAL PUBLICATIONS, Hans E.R. de Boer, 1994. A CLOSE CALL AT YOWAH, Herman Kreller, 1998. A FIELD GUIDE TO AUSTRALIAN OPAL, … Read more
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 … Read more
100 YEARS OF PASSION FOR GROSSE & BIJOUX CHRISTIAN DIOR, Vivienne Becker (et al.), 2010. 500 BRACELETS, Marthe LeVan, 2005. 500 EARRINGS, Marthe LeVan, 2007. … Read more
GEMMOLOGICAL LABORATORY FACT SHEET Chemical composition of Opal: Si0 2nH 20 – Hydrated Silica. • Water content in Precious Opal 3-10%. • Water content … Read more