The Carlsbad and New York laboratories and schools will be closed on Monday, May 28 in observance of the Memorial Day holiday. These locations will resume regular business hours on Tuesday, May 29.
Research & News
Green Crystals in Yellow Sapphires
Two yellow sapphires yield surprising green inclusions.
2018 GIA Symposium
Scientists and business leaders will gather at a summit of the gem and jewelry industry.
Making of M.D. Hohenstine’s Gem Displays
Jeweler M.D. Hohenstine’s spectacular window displays were a beloved tradition in downtown Columbus, Ohio, for more than 50 years.
Tucson 2018 Overview
An overview of the 2018 Tucson gem shows.
Vesuvianite in Burmese Ruby
A yellowish green crystal inclusion in a ruby is found to be vesuvianite.
Aquamarine from Pakistan
A gemological investigation of the aquamarine that has emerged from northern Pakistan in recent years.