lectures
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Lecture | Ruby Inclusions | Yangon, Myanmar | 11 January 2018
A description of the inclusions found in ruby around the world, including Myanmar, Thailand/Cambodia, Vietnam, Tajikistan, Madagascar and Mozambique.
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Lecture | Ten Thoughts on Gemology | Chiang Mai | 9 December 2014
Ten lessons on gemology and life.
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Lecture | Ten Thoughts on Gemology | Tucson | 3 February 2016
Ten lessons on gemology and life.
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Lectures | Ruby & Sapphire | A Collector's Guide | Hong Kong | 18 September 2014
A lecture on the trading and grading of ruby and sapphire, with an emphasis on the fine points of what collectors should look for.