GIA Research

Research that transforms and inspires

Placeholder Alt Text

For decades, GIA has been on the cutting edge of gemmological research, analysing data on gems and their characteristics. This effort becomes more challenging each year, as new gem sources emerge and new treatment processes and synthetic materials come onto the market.

Recent Findings

A piece of diamond rough with green body color and triangular etchings on the surface.
GIA Researchers Reveal the Secrets of Diamond-in-a-Diamond Mystery

Researchers examined one of the most interesting and unique diamond crystals ever found.

Read More
Pearls, shells, and jewelry on table
The Lure of American Freshwater Pearls: Revisiting the Latendresse Family

John Latendresse is known as the father of American cultured pearls. He was also a great natural pearl collector and left his family a remarkable natural pearl collection. The Latendresse family is well recognised in the American pearl industry and has long supported GIA pearl research. Come with us to revisit this family and their pearl collection.

Read More
5.19 ct CVD synthetic diamond
CVD Synthetic Diamond Over 5 Carats Identified by GIA

Results from GIA’s recent testing of a 5.19 ct CVD synthetic diamond, the largest it has examined to date.

Read more in English