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A man and woman shake hands during a career fair event. In the background is a GIA poster.

Article

Adapting to Changing Workplaces

Russell Shor

March 5, 2019

GIA Career Service advisors offer tips on how to navigate the changing workforce and consumer attitudes for success in the gem and jewelry industry.

Natural-Color Tanzanite and Yellow Sapphire – Tucson 2014

Duncan Pay

April 30, 2014

Fine unheated tanzanite, untreated yellow sapphire, and heated pink zircon on display at GJX in Tucson.

Fine Corundum, Paraíba Tourmaline, and Alexandrite – Tucson 2014

Duncan Pay

April 30, 2014

Updates on the corundum, paraíba tourmaline, and alexandrite markets from the 2014 gem shows in Tucson, Arizona.

Titanium-Bearing Synthetic Alexandrite and Chrysoberyl

Jennifer Stone-Sundberg

January 31, 2014

Overview and commentary on the 2013 Journal of Gemmology article “Titanium-Bearing Synthetic Alexandrite and Chrysoberyl.”

Oregon Sunstone Update

Duncan Pay

April 30, 2015

An review of the Oregon sunstone seen at the Tucson gem shows.

Article

A Sunstone Odyssey, Part 1: The Ponderosa

Duncan Pay, Robert Weldon, and Kevin Schumacher

October 23, 2013

The first of a three-part series exploring Oregon’s state gem reports on a July 2013 visit to the Ponderosa mine, a prolific sunstone source surrounded by majestic ponderosas.

Large sunstone rough from the Ponderosa mine in Oregon

Ponderosa Sunstone Update

Duncan Pay

May 11, 2018

John Woodmark provides an update on the Ponderosa sunstone mine in Oregon.

Short-wave UV exposure’s effect on zircon color

Tenebrescent Zircon

Ratima Suthiyuth

July 25, 2014

Color modification is observed in a reddish orange zircon at the Bangkok laboratory.

Recent production of turquoise from Polk County, Arkansas

Turquoise from Western Arkansas

Jennifer-Lynn Archuleta and Nathan Renfro

May 11, 2018

A report on turquoise from the only known U.S. deposit outside of the Southwest.

Article

Queensland Opal Fields: Home of the Unique Australian Boulder Opal

Tao Hsu, Andrew Lucas, and Vincent Pardieu

January 24, 2017

Boulder opal is becoming more and more popular. Australia’s central Queensland is the home of more than a dozen of sources of this stone. Come with GIA field gemologists to find out more about this unique gem.

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