The Elahera gem field currently provides approximately 35% of the gemstones exported from Sri Lanka.

An overview of Australia's recent significance in the production of blue sapphire.

An extraordinary 236.27 ct morganite from Madagascar stands out at the GJX show.

The history and mysteries behind a treasure of jewels hidden during the 1600s, a window to the past being fully opened to the public for the first time since a chance discovery a century ago.

Several famous and historical gemstones in the Smithsonian's collection are examined and reported on.

The final part of this series is concerned with colors explained by band theory, such as canary yellow diamonds, or by physical optics, such as play-of-color in opal.

The gemological properties of a new ruby imitation, produced by dyeing natural colorless to pale-colored corundum, are described.

Northern Vietnam began producing significant quantities of rubies and fancy sapphires in the late 1980s.

The history of Baja California has been closely tied to the exploitation of pearls since the 16th century.