With a reach that spans the globe, GIA is a nonprofit institute dedicated to protecting consumers by ensuring their trust in gems and jewelry through cutting edge gemological research, rigorous ...

More ephemeral than the diamond ring, the rush ring was hastily made from leaves or grass and lasted in many cases as long as the short-lived engagement. A more enduring and popular 16th century ring, ...

Field reports, videos, photography, and firsthand accounts from mines and industry hot spots around the world.

colored stone research The microscope is one of the most important tools for a careful gemologist. Unbeknownst to the casual observer, there exists a fascinating and visually stunning microscopic ...

Examines the effectiveness of hydrogen and oxygen isotopes in discriminating dolomite-related nephrites from the four most important occurrences worldwide.