Article Search Results

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.

Suite containing over 36 carats of Yogo sapphire

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.

Bracelet containing akoya cultured pearls from Australia

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.

Japanese Jadeite: History, Characteristics and Comparison with Other Sources

Ahmadjan Abduriyim, Kazuko Saruwatari, and Yusuke Katsurada, May 5, 2017

Examines the sources, colour, texture and chemical composition of jadeite from Japanese deposits.

Rough danburite crystals from Luc Yen, Vietnam

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.

A 0.11 ct faceted grandidierite from Madagascar

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.

Mining Diamonds in the Canadian Arctic: The Diavik Mine

James E. Shigley, Russell Shor, Pedro Padua, Christopher M. Breeding, Steven B. Shirey, and Douglas Ashbury, August 3, 2016

Located near the Arctic Circle, Diavik is one of the world’s richest diamond deposits and a leader in sustainable mining.

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.

Two variscite cabochons from central Tajikistan

Variscite from Central Tajikistan: Preliminary Results

Andrey K. Litvinenko, Elena S. Sorokina, Stefanos Karampelas, Nikolay N. Krivoschekov, and Roman Serov, April 28, 2016

A look at the gemmological properties and chemical composition of this light blue to light green to green gem material, which is suitable for cabochon cutting.

Letšeng’s Unique Diamond Proposition

Russell Shor, November 22, 2015

Explores the history, geology and current production of this unique source of large diamonds.

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Article Search Results

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