“Precise and artistic cutting: today and tomorrow”
Gem-A Conference of the Gemmological Association, London, UK, 2018
"Features of Evaluating Artistically and Precisely Cut Stones"
“Characteristics of Evaluating Artistically and Precision-Cut Stones” – Mediterranean Gemological Conference, Sicily, Italy, 2017
The Fourth C (Cut): Today and Tomorrow
International Gemological Conference, Pattaya, Thailand, 2016
The Philosopher's Stone: Wisdom Glittering in a Cut Stone
Gemological Symposium, Sainte-Marie-aux-Mines, France, 2015
"Cutting as a factor in stone evaluation"
International Colored Stone Dealers Association Congress, Sri Lanka, 2015
"Cutting as a Factor in the Valuation of Stones in Tomorrow's Market"
AGA Conference, USA. February 2015
