**About the Editors**

**Frederick Lin Sutherland** is a Senior Fellow in Geosciences at The Australian Museum in Sydney, New South Wales. He graduated in geology at University of Tasmania and gained a MSc in Petrology in 1969. He was awarded a PhD in Geology at James Cook University of North Queensland in 1982. His research has focused on Australian and SE Asian minerals and gemstones, volcanic mineral associations, high pressure mantle and lower crustal xenocryst and xenolith suites, world class mineral collections and mass extinction events. He has served as Secretary and Chairman for the IMA Commission on Gem Materials. In his research he has authored and co-authored over 160 peer-reviewed papers and has written several well-received books that include *Gemstones of the Southern Continents, The Volcanic Earth, Earthquakes and Volcanoes*, and *Gemstones and Minerals of Australia*. Some 30 papers and book chapters have dealt with topics related to ruby. He is a present Associated Editor of *The Journal of Gemmology*.

**Khin Zaw** is Professor of Economic Geology at CODES (Centre of Ore Deposit and Earth Sciences), University of Tasmania, Hobart. He has a BSc from Yangon University, Myanmar, in 1968, an FGA Diploma (Fellowships of Gemmological Association of Great Britain) in 1969, a MSc (Economic Geology) from Queen's University, Canada, 1976 and a PhD from the University of Tasmania in 1990. He is a Fellow of the Australasian Institute of Mining and Metallurgy and a Fellow of Society of Economic Geologists. He was awarded a Geological Society of London (GSL) life Honorary Fellowship in 2019. He has over 35 years of experience working on genetic aspects of mineral deposits in Canada, Australia, New Zealand, China and many parts of SE Asia (Vietnam, Laos, Cambodia, Malaysia, Thailand, Indonesia, Myanmar and Malaysia), and has published a high number of papers relating to ore genesis and mineral exploration in the Australasian region. He works closely with his counterparts from the SE Asia region. He leads industry-CODES-funded projects on the *Ore Deposits of SE Asia*. He is currently associate editors of *Journal of Asian Earth Sciences* and *Goescience Frontiers*.
