The Latest Lectures from Lotus Gemology

Intro Image Describing Color in Gems | A Fool's Guide

Lecture | Describing Color in Gems | A Fool's Guide | Tucson | 6 February 2025

Color types such as "pigeon's blood," "cobalt blue" and "Santa Maria" are wildly popular, but also wildly inconsistent.

Lecture | Describing Color in Gems | A Fool's Guide | Hong Kong | 4 March 2025

Color types such as "pigeon's blood," "cobalt blue" and "Santa Maria" are wildly popular, but also wildly inconsistent.

Intro Image Madagascar Sapphire • Low-Temperature Heat Treatment Experiments

Lecture | Madagascar Sapphire | Bangkok | 23 February 2025

Lotus Gemology's E. Billie Hughes will review key gemological features of Madagascar sapphire and how to detect heat treatment of this material.

Intro Image Trick or Treatment • Detecting Enhancement in Ruby & Sapphire

Lecture | Trick or Treatment | Tucson | 2 February 2025

Lotus Gemology's E. Billie Hughes will review the major treatments of ruby and sapphire and how they can be identified.

Lecture | Broken Bangle | Tucson | 2 February 2025

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

Intro Image Inside Out: Journey into the Center of a Gem

Lecture | Inside Out: Journey into the Center of a Gem | Tucson | 1 February 2025

Lotus Gemology's Billie Hughes takes participants on a journey to the fascinating inner world of gems.

Intro Image Welcome to Rubyland sign in Mogok, Myanmar

Lecture | Welcome to Rubyland | Seoul | 4 November 2024

Billie Hughes and Ann Lee take the audience on a journey through the world of rubies.

Lecture | A Canary in the Ruby Mine | Brussels | 19 October 2024

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

Lecture | Inside Out: Journey into the Center of a Gem | Brussels | 19 October 2024

Lotus Gemology's Billie Hughes takes participants on a journey to the fascinating inner world of gems.

Lecture | Broken Bangle | Brussels | 19 October 2024

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

Intro Image Jade | China's Gift to the World

Lecture | Jade | China's Gift to the World | Hong Kong | 16 September 2024

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

Lecture | Inside Out: Journey into the Center of a Gem | Hong Kong | 16 September 2024

Lotus Gemology's Billie Hughes takes participants on a journey to the fascinating inner world of gems.

Lecture | Broken Bangle | Bangkok | 13 September 2024

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

Lecture | Trick or Treatment | Bangkok | 13 September 2024

Lotus Gemology's E. Billie Hughes will review the major treatments of ruby and sapphire and how they can be identified.

Lecture | Broken Bangle | Shanghai | 10 September 2024

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

Lecture | Welcome to Rubyland | Singapore | 26–27 July 2024

Billie Hughes and Olivier Segura take the audience on a journey through the world of rubies.