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A notebook, pen, mobile phone with compass app and a digital camera sit on top of a map.

Article

The Stories Behind the Photos: A Gigantic Aquamarine and ‘Gaudy’ Nature

Amanda J. Luke, July 24, 2020

Gemmological photojournalist Robert Weldon shares the stories behind some of his favourite photos.

Article

G&G Announces Most Valuable Article Awards

The G&G Staff, May 12, 2020

G&G announces the winners of the Dr Edward J. Gübelin Most Valuable Article Awards for 2019.

Man sits at his desk with a display stand of multiple pieces of jewelry in front of him.

Article

Alum’s Lifelong Quest: Searching for Jewellery Unicorns

August 14, 2019

Alan Nacht continues his family’s legacy - Bernard Nacht & Co. – and his quest for unforgettable jewellery.

A diamond ring without the centre stone, which is framed by two rows of small diamonds.

Article

Jewellery Detectives: Students Search for Clues to Quality Workmanship and Longevity

Amanda J. Luke, July 19, 2019

GIA’s Jewellery Forensics seminar teaches students to become jewellery detectives as they assess jewellery design and engineering for quality.

On the left is a 5.26 ct Fancy deep blue heart shape HPHT synthetic diamond. On the right is a 5.27 ct Fancy deep blue emerald cut HPHT synthetic diamonds.

Article

The Latest on Synthetic Diamonds

GIA, September 8, 2017

Dr James Shigley, GIA distinguished research fellow, is one of the foremost experts in diamonds and their identification. In this presentation recorded at the 2017 JCK Las Vegas show, he shares the latest developments about HPHT and CVD synthetic diamond

IMG - SP16 Editorial Pay Tucson 198880 300x169

Tucson: A Showcase of Coloured Gemstone Innovation

Duncan Pay, April 28, 2016

An overview of the Spring 2016 Gems & Gemology content.

Article

Pyrope Garnet and Montana Sapphires Highlight Winter 2015 G&G

Russell Shor, February 1, 2016

G&G Brief presents an overview of the content of the Winter 2015 issue of Gems & Gemology.

Garnets, Sapphires, Opals and Tarnish on High-Purity Gold

Duncan Pay, February 1, 2016

An overview of the Winter 2015 Gems & Gemology content.

Trapiche and More...

Duncan Pay, November 6, 2015

Colombia’s unique trapiche emeralds exert a fascination for many gemmologists.

Long-Term Durability of CVD Synthetic Film on Natural Diamond

Sally Eaton-Magaña, July 25, 2014

A natural diamond with a CVD synthetic film is examined at GIA's Carlsbad lab.

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