Article Search Results

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.

Fancy Dark brown to Fancy black Marange diamonds

Black Diamonds from Marange (Zimbabwe): A Result of Natural Irradiation and Graphite Inclusions

Karen V. Smit, Elina Myagkaya, Stephanie Persaud, and Wuyi Wang, August 6, 2018

Characterises a suite of 40 natural brown to black diamonds from this deposit so that they can be distinguished from suspected treated black diamonds.

The Very Deep Origin of the World’s Biggest Diamonds

Evan M. Smith, Steven B. Shirey, and Wuyi Wang, November 8, 2017

Explores an exceptional family of diamonds, referred to as “CLIPPIR” (Cullinan-like, Large, Inclusion-Poor, Pure, Irregular and Resorbed), that formed in a super-deep environment.

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.

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.

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.

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.

Grey-To-Blue-To-Violet Hydrogen-Rich Diamonds from the Argyle Mine, Australia

Carolyn H. van der Bogert, Christopher P. Smith, Thomas Hainschwang, and Shane F. McClure

The Argyle diamond mine is the only known source of type IaB hydrogen- and nitrogen-rich diamonds coloured grey to blue to violet.

Update on Ammolite Production from Southern Alberta, Canada

Keith A. Mychaluk

There have been a number of changes in Ammolite production from southern Alberta, Canada, since 2001.

Diamonds in Canada

B. A. Kjarsgaard and A.A. Levinson, September 1, 2002

This article chronicles the discovery of primary diamond deposits throughout Canada, whose increasing supply of rough stones will have a growing impact on the world diamond industry.

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Article Search Results

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G&G Winter 2019 Edition