featured Research & News

A male retail jeweler helps a woman look at a diamond through a loupe.
Industry Analysis

Reports Indicate Continued Economic Growth

Holiday jewelry sales in the U.S. increased in 2017, according to a several industry and economic reports. Updates on diamond markets and challenges.
Read More
Sub-hexagonal etch pits in synthetic moissanite.
Lab Note

Synthetic Moissanite Imitating Rough Diamond

A light green specimen, submitted as a rough diamond, is actually a synthetic moissanite.
Read More
Sixteen samples of facet-quality ruby
GEM NEWS INTERNATIONAL

Preliminary Observations on Facet-Grade Ruby from Tanzania

Microscopic observation and trace element analysis is performed on rubies from Longido.
Read More
Alexandrite cabochon in fluorescent (left) and incandescent light (right).
LAB NOTE

Cat’s-Eye Alexandrite with Unique Inclusion Pattern

Examination of a chatoyant alexandrite cabochon.
Read More
Circular logo with the words “International GIA Gemological Symposium” around the outside and a star with a diamond center in the center circle.
Event

2018 GIA Symposium

Symposium has revealed the discoveries, opportunities and insights that move businesses forward. Seats are limited. Register today.
Read More

You Might Also Like

Find a Retailer
learn more
Shop the Campus Store
Learn More
Quality Assurance Benchmarks
Learn More
Gems & Gemology
G&G Winter 2017 Edition
Learn more