Lectures

Billie Hughes and Olivier Segura discuss inclusions in colored gemstones and diamonds at an Evening Conversation for L'École School of Jewelry Arts, Van Cleef & Arpels.

Billie Hughes and Olivier Segura discuss inclusions in colored gemstones and diamonds at an Evening Conversation for Van Cleef & Arpels.

A discussion about the importance of inclusions and photomicrography.

Hands-on workshop looking at different types of jade.

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

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.

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 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.

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.

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.