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.
Read MoreRussell Shor, June 14, 2019
Gemstones and jewels with historical provenance are bringing the best prices at the spring 2019 auctions.
Read MoreRussell Shor, February 1, 2019
Black diamonds are striking in jewellery. GIA researchers report on the unique properties used to identify black diamonds and the potential treatments.
Read MoreRussell Shor, January 21, 2019
New illustrated gem guide helps small-scale artisanal miners learn more about the quality and classification of the gems they recover.
Read MoreDarwin Fortaleché, Andrew Lucas, Jonathan Muyal, Tao Hsu, and Pedro Padua, November 8, 2017
A first-hand look at Colombia’s emerald mines and the cutting and trading industry in Bogotá.
Read MoreRussell Shor, September 18, 2017
The average value of rough diamonds mined last year dropped sharply, while demand has trended towards smaller stones and lower qualities.
Read MoreRussell Shor, July 17, 2017
Organisation for Economic Co-operation and Development reviews issues surrounding sustainable mining practices and increasing returns for artisanal miners.
Read MoreRussell Shor, April 18, 2017
The Responsible Jewellery Council holds a discussion on the challenges and issues of certifying coloured gem firms at the 2017 Baselworld fair.
Read MoreRussell Shor, January 20, 2017
The diamond industry was slow to recover in 2016 and coloured gems got a welcome shot in the arm. Mixed signals leave no clear indicators for 2017.
Read MoreRussell Shor, December 12, 2016
Find out why the number of very large diamonds entering the market has increased sharply in the last few years.
Read MoreYou are being redirected to GIA Alumni Association, LLC.