A discussion about the importance of inclusions and photomicrography.

Richard Hughes examines the historical sources of jade, along with the remarkable renaissance in Chinese jade carving that has occured since the 1990s.

Billie Hughes & Wim Vertriest report the results from their low-temperature heat treatment experiments on Burmese ruby.

Hands-on workshop looking at different types of jade.

Richard Hughes examines the historical sources of jade, along with the remarkable renaissance in Chinese jade carving that has occured since the 1990s.

Richard Hughes examines the historical sources of jade, along with the remarkable renaissance in Chinese jade carving that has occured since the 1990s.

Richard Hughes examines the historical sources of jade, along with the remarkable renaissance in Chinese jade carving that has occured since the 1990s.

Experience the hidden world of ruby & sapphire in this exhibition with Lotus Gemology and Van Cleef & Arpels' L'École School of Jewelry Arts

Lotus Gemology's E. Billie Hughes will captain a special workshop devoted to gemological microscopy and photomicrography.

Plunge into the fascinating microworld of ruby and sapphire with award-winning photomicrographer E. Billie Hughes.

Richard Hughes examines the historical sources of jade, along with the remarkable renaissance in Chinese jade carving that has occured since the 1990s.

Lotus Gemology's E. Billie Hughes looks at the important sapphire producing localities in Madagascar, along with the key gemological features that can help separate them from other sapphire sources.

Richard Hughes examines the historical sources of jade, along with the remarkable renaissance in Chinese jade carving that has occured since the 1990s.

A lecture on the trading and grading of ruby and sapphire, with an emphasis on the fine points of what collectors should look for.

A look at the important sapphire producing localities in Madagascar, along with the key gemological features that can help separate them from other sapphire sources.