Akira Hyatt, Joyce Wing Yan Ho, Emiko Yazawa, Chunhui Zhou, March 4, 2020

Color stability experiments show that the color of Queen conch shell and pearls may shift in hue and/or saturation under X-ray radiation or short-wave UV radiation.

Russell Shor, February 10, 2020

Economic impact of the coronavirus. Plus, an update on the diamond market and gold jewelry.

Amanda J. Luke, February 10, 2020

GIA scientists recently presented their latest research on diamond tagging and the cause of gray-blue-violet color in diamonds at the Princeton-GIA Diamond Symposium.

Amanda J. Luke, February 7, 2020

Talk presents little known and fascinating facts about pearls.

Brooke Goedert, January 31, 2020

An overview of the Winter 2019 Gems & Gemology content.

Russell Shor, January 22, 2020

Taking a look at the rough opal that plays a major role in the Adam Sandler film “Uncut Gems.”