News & Articles

552.7 ct Yellow Diamond from the Diavik Mine

The Largest Diamond Ever Discovered in North America

Wuyi Wang and Evan Smith , February 11, 2019

GIA examines a 552.7 ct diamond from the Diavik mine in Canada.

Bows in Jewelry: The Finishing Touch in Giving

Sharon Bohannon, February 4, 2019

Bows have been a popular motif and finishing touch in jewelry and fashion from time immemorial, recurring and adapting to reflect the style of the era.

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.

GIA Researchers Look Inside Black Diamonds

Russell Shor, February 1, 2019

Black diamonds are striking in jewelry. GIA researchers report on the unique properties used to identify black diamonds and the potential treatments.

Winter 2018 G&G: The Color Origins of Pink-to-Red Diamonds and Gem-Grade Diaspore, and Gemological Characteristics of Pearls from P. Maculata

Jennifer-Lynn Archuleta, February 1, 2019

A summary of the Winter 2018 issue of Gems & Gemology.

Young man reads illustrated gem guide, sitting on a cement bench.

Gem Guide Delivers Education, Social Return to Artisanal Miners

Russell 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.

Shoppers walk in a mall past a Chow Tai Fook jewelry store.

Season’s Sales: US Up 4% to 5%, But China Continues to Lag

Russell Shor, January 21, 2019

The U.S. holiday season saw strong sales, but China continues to struggle. Plus: diamond market report and lab-grown diamond sales.

Gems & Gemology

Gems & Gemology

Gems & Gemology

News & Articles

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G&G Winter 2018 Edition