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
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.
2018 GIA Symposium
Scientists and business leaders will gather at a summit of the gem and jewelry industry.
Vesuvianite in Burmese Ruby
A yellowish green crystal inclusion in a ruby is found to be vesuvianite.
Gemologist Explores Giant Crystals
‘Adventure seeker’ crawls through underground caves to reach and research giant selenite crystals – then shares her knowledge with the world.
Complex Yellow Fluid Inclusions in Red Burmese Spinel
A unique inclusion in red spinel is indicative of a Burmese origin.
Tucson 2018 Overview
An overview of the 2018 Tucson gem shows.