Since the late 1960's, East Africa has been home to some of planet earth's greatest gem discoveries. And yet, little has been written about certain of...

In July 2008, US President George W. Bush signed a law that modified existing sanctions against Burma (Myanmar). Hidden in the fine text of that bill ...

Gübelin, Eduard J. & Koivula, John I. (2005) Photoatlas of Inclusions in Gemstones, Volume 3. Opinio Publishers, Basel, Switzerland, 672 pp. ISBN ...

The use of Fourier-Transform Infrared Spectroscopy (FTIR) in gem identification, with examples of sapphire & jadeite.

A discussion of the ethics of gem treatment disclosure, a comparison of gem treatments, and the crisis these could bring to the industry if mishandled...

When it comes to gemology, whether it is practiced in the lab or jewelry store, the importance of traveling to the source cannot be emphasized enough....

A 2006 mission to remote ruby and spinel localities in Tajikistan.

A brief look at the famous emerald and alexandrite from Russia's Ural Mountain mines.

The use of high-temperature lattice-diffusion heat treatment with beryllium to lighten the color of blue sapphires.

Do men and women have the same ability to see red? The answer might shock you.