Akoya Cultured Pearl Farming in Eastern Australia
Laura M. Otter, Oluwatoosin B. A. Agbaje, Le Thi-Thu Huong, Tobias Häger, and Dorrit E. Jacob, January 26, 2018
Characterises the akoya cultured pearls produced on the eastern shoreline of Australia using native Pinctada imbricata fucata molluscs.
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Gemmological Characterisation of Sapphires from Yogo Gulch, Montana
Nathan D. Renfro, Aaron C. Palke, and Richard B. Berg, August 6, 2018
A look at the mining and distinguishing characteristics of this naturally vibrant blue sapphire.
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An Early Byzantine Engraved Almandine from the Garibpet Deposit, Telangana State, India: Evidence for Garnet Trade Along the Ancient Maritime Silk Road
H. Albert Gilg, Karl Schmetzer, and Ulrich Schüssler, August 6, 2018
Analyses the chemical composition and inclusion characteristics of this ancient artefact.
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A New Deposit of Gem-Quality Grandidierite in Madagascar
Delphine Bruyère, Claude Delor, Julien Raoul, Rufin Rakotondranaivo, Guillaume Wille, Nicolas Maubec, and Abdeltif Lahfid, November 7, 2016
Reviews the properties of exceptionally pure grandidierite from a new source.
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Chrysoberyl from the New England Placer Deposits, New South Wales, Australia
Karl Schmetzer, Franca Caucia, H. Albert Gilg, and Terrence S. Coldham, April 28, 2016
Examines a collection of chrysoberyl samples from these sapphire placer deposits to determine their distinct mineralogical and chemical properties.
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A New Find of Danburite in the Luc Yen Mining Area, Vietnam
Le Thi-Thu Huong, Laura M. Otter, Tobias Häger, Tim Ullmann, Wolfgang Hofmeister, Ulrike Weis, and Klaus Peter Jochum, January 27, 2017
Reports on a recently discovered eluvial deposit of honey yellow danburite with excellent transparency.
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Amethyst from Boudi, Morocco
Fabrizio Troilo, Abdelghani El Harfi, Salahaddine Mouaddib, Erica Bittarello, and Emanuele Costa, April 30, 2015
An introduction to Moroccan amethyst, which features distinctive color zoning and inclusions.
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Hunting for
“Jedi” Spinels in Mogok
Vincent Pardieu, April 30, 2014
Documents a series of visits to Myanmar in search of exceptionally bright pinkish red spinels possessing no dark tones.
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Rubies and Sapphires from Winza, Central Tanzania
Dietmar Schwarz, et al.
Since late 2007, rubies and sapphires have been mined by hand methods from both eluvial and primary deposits at Winza in central Tanzania.
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Characterisation of Peridot from Sardinia, Italy
Ilaria Adamo, Rosangela Bocchio, Alessandro Pavese, and Loredana Prosperi
Gem-quality peridot is occasionally found as mantle xenoliths within basalts near Pozzomaggiore.
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