PRESENTATIONS
2009 GIA Gem Gathering Bangkok :
2009 GIA Gem Gathering Bangkok:
Trapiche: The Rising Star
2010 GIA Gem Gathering Bangkok –
2011 GIA Gem Gathering Bangkok:
2011 GIA Alumni Assn. Atlanta, Georgia – Spinel: The Great Impostor
2012 World of Gems Conference III Chicago: Hexagonal geometry in art, architecture, religion, biology, minerals, gemstones and jewelry
2012 GIA Gem Gathering Bangkok – A Dazzling Evolution: Co-evolution of life and minerals generating diversity and complexity in gemstones
2012 GIA Alumni Assn. San Francisco – Spinels & Opals
2013 GIA Gem Gathering Bangkok – Tanzanite: Facts, Fairytales and Fakes
2013 JCK AGTA Las Vegas – Tanzanite rumors in the industry
2013 Italian Gemmological Conference, Naples – Tanzanite: Facts, Fears & Fairytales
2014 GIA Gem Gathering Bangkok – Geometric Passion & Obsession: How Hexagons Shape Gems and Jewellery
2014 GIA Alumni Assn. San Francisco – Tanzanite: Facts, Fears & Fairytales
2015 AGA Tucson Conference. Collector Gems: A Co-Evolution of Life, Minerals, and Technology
2015 GIA Gem Gathering Bangkok –
Opal Treatments: Facts, Fears & Fairytales
2016 Mediterranean Gemmological & Jewellery Conference, Valencia, Spain – Phenomenal Prices –Market Value of Phenomenal Gems
2018 NAJA Tucson – Shakiso Ethiopian Emeralds
2018 First Iranian Gemological Symposium, Kish, Iran – Shakiso Ethiopian Emeralds
2018 GIA Alumni Assn. Houston – Mineral Diversity & Complexity – CoEvolution of Life & Minerals
2019 AGA Tucson Conference – Our Newest Emerald Source (Ethiopia)
2019 AIGS Seminar Hangzhou, China – Rubies, Sapphires, and Emeralds
2019 AGS Arizona Guild Meeting – Hexagons: From Passion to Obsession
2021 IIG – International Institute of Gemology, Bengaluru, India – Kashmir Trapiche Ruby from the Batakundi mine
6th Mediterranean Gem and Jewellery Conference Thessaloniki, Greece – Spinel history, origins, treatments, marketing & pricing
