Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design
The first annual Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design was presented to GIA graduate Catherine Zheng.
Type IIa Diamond with Extraordinary Etch Channels
Rare dissolution etch channels are seen in a natural diamond.
Aquamarine from Pakistan
A gemological investigation of the aquamarine that has emerged from northern Pakistan in recent years.
Outlook on Opals from Mexico and Australia (英语)
Jürgen Schütz discussed the opal sourcing and cutting activities of the German firm Emil Weis.
Turquoise from Western Arkansas
A report on turquoise from the only known U.S. deposit outside of the Southwest.
Quarterly Crystal: Cr-Diopside in Diamond
A bright green chromium diopside inclusion is seen in a diamond from South Africa's Kimberley mine.
HPHT-Processed Diamond Fraudulently Represented as Untreated
An HPHT-treated round brilliant diamond with an inscription that presents as a GIA report number is found to be inconsistent with the institute's report, previously issued for an untreated diamond.
Cat's-Eye Demantoid and Brown Andradite with Horsetail Inclusions
The examination of two unusual garnets results in identifications issued for the first time in GIA's colored stone report records.
Ponderosa Sunstone Update
John Woodmark provides an update on the Ponderosa sunstone mine in Oregon.
Very Small Akoya Cultured Pearls
A selection of very small akoya cultured specimens demonstrates the challenges gemologists face when determining pearl origin.
The Beauty of Natural Green Diamonds
Spring 2018 G&G Publication Information
This document provides the publication information for Gems & Gemology
Finds from the Secondary Market
Dave Bindra shows some noteworthy pieces he obtained on the secondary market and shares his thoughts on the state of the colored stones market.
Multi-Generation Cutting Family from Idar-Oberstein
.jpg "YMAL GIA Ed")
