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A wide choker-style necklace of a row of emeralds with rows of diamonds above and below the emeralds.

Article

Spring 2019 Auctions: Premium Prices for Historic Pieces

Russell Shor, June 14, 2019

Gemstones and jewels with historical provenance are bringing the best prices at the spring 2019 auctions.

The ring is designed with a wavy strip of black diamonds in the center framed on each side with colorless diamonds set in a ruffled edge The earring are crescent shaped with black diamond on the inside framed by colorless diamonds in a ruffled edge.

Article

GIA Researchers Look Inside Black Diamonds

Russell 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.

A sorter works at a table lined with sorted piles of diamond rough.

Article

Diamond Producers Aim for Lower Qualities in Today’s Market

Russell 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.

Miners, working in a row along a body of water, use hand sieves to sift gravel.

Article

International Group Sets Sights on Sustainable Gemstone Mining

Russell Shor, July 17, 2017

Organisation for Economic Co-operation and Development reviews issues surrounding sustainable mining practices and increasing returns for artisanal miners.

A close-up image of a pile of rough diamonds.

Article

Ups and Downs of 2016 Make for an Uncertain 2017

Russell 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.

Article

Is Another 1,000 (or 3,000) Carat Diamond Around the Corner?

Russell Shor, December 12, 2016

Find out why the number of very large diamonds entering the market has increased sharply in the last few years.

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