An overview of the Summer 2025 Gems & Gemology content.

An overview of the Summer 2025 Gems & Gemology content.

Provides a comprehensive summary of the special optical effects in gemstones, including opalescence, chatoyancy, asterism, schiller, and iridescence, and investigates the submicron inclusions and nanotextures in each type of phenomenal stone.

Describes the geology, mineralogy, and formation of granitic-composition pegmatites and provides a summary of their worldwide occurrences.

Profiles the extraordinary life and work of Ben Kho, from a young entrepreneur in Cambodia to an award-winning gem cutter.

A report from GIA’s Carlsbad laboratory on emerald and beryl samples studied as part of an ongoing beryl characterization research project.

In July 2025, staff from GIA, including GIA Executive Vice President and Chief Research and Laboratory Officer Tom Moses and Vice President of Research and Development Dr. Wuyi Wang, examined a rough diamond weighing 2,488.32 carats

In July 2025, staff from GIA, including GIA Executive Vice President and Chief Research and Laboratory Officer Tom Moses and Vice President of Research and Development Dr. Wuyi Wang, examined a rough diamond weighing 2,488.32 carats

GIA will launch revised evaluation services for D-to-Z laboratory-grown diamonds on October 1

GIA will launch revised evaluation services for D-to-Z laboratory-grown diamonds on October 1

Sriram 'Ram' Natarajan, previously managing director of GIA India Laboratory Private Limited (GIA India), has been appointed to a new role as senior vice president of laboratory operations.

GIA developed this guide so retailers can use fluorescence tests to help identify gems right in their own stores.

Industry leaders and some of GIA’s most experienced gemological experts will share their expertise and insights with participants at Converge

Industry leaders and some of GIA’s most experienced gemological experts will share their expertise and insights with participants at Converge.

360-degree video of the Motswedi diamond.

The Board of Governors of GIA has named Pritesh Patel, currently GIA’s Chief Operating Officer, as the Institute’s President and Chief Executive Officer

The Board of Governors of GIA has named Pritesh Patel, currently GIA’s Chief Operating Officer, as the Institute’s President and Chief Executive Officer.

GIA has evaluated more than 30 rare and historically significant jewels ahead of Christie’s Magnificent Jewels auction, taking place on June 17 in New York.

A graduate of GIA’s Jewelry Design program in London is the recipient of the 2024 Gianmaria Buccellati Foundation Award.