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Article

Ruby Description

Ruby is the most valuable variety of the corundum mineral species, which also includes sapphire.

Article

GIA Field Gemmologist Documents Madagascar Ruby Rush

GIA Staff, December 9, 2015

Join GIA’s recent field expedition to the ruby rush in Madagascar’s Zahamena National Park.

Article

Discover Mozambique’s Montepuez Ruby Mine with GIA’s Field Gemmologists

GIA staff, September 25, 2015

See inside the world’s most productive ruby mining operation with GIA’s field gemmology team.

Article

On the Trail of Africa’s Hidden Gems with GIA’s Field Gemmologists

GIA Staff, November 6, 2015

Visit gem mining areas in Madagascar, Kenya, Tanzania, Zambia and Mozambique with GIA’s field gemmologists.

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.

Article

Ruby Journey

Ruby is the most valuable variety of the corundum mineral species, which also includes sapphire

A face-up view of a cushion cut diamond with blue color.

Article

Gems & Gemology’s 7 Most Unusual Encounters from 2019

Stuart Overlin, Brooke Goedert and Kellie Giordano, December 13, 2019

Check out some of the most interesting and unusual diamonds and coloured stones submitted to GIA’s laboratories in 2019.

A round, bright red gem displayed on a dark gray background.

Article

The Red Hot Gems of Summer

Sharon Bohannon, August 21, 2017

These red, pink and orange hued gems evoke passion and excitement – and are sure-fire accessories for sultry summer days.

Looking down the crystal axis of a back-lit 58.83 ct trapiche emerald

Article

Emerald: The Superstar of Trapiche Gemstones

Sharon Bohannon, May 17, 2019

Trapiche emeralds, which display a distinct six-spoke wheel pattern, set the standard as some of the finest and most spectacular crystals ever unearthed.

Spring 2000 Gem News International

March 1, 2000

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewellery manufacturing techniques and industry trends.