Panagiotis Voudouris is a Professor of Mineralogy and Petrology at the Faculty of Geology & Geoenvironment, National and Kapodistrian University of Athens, Greece. He graduated in 1986 from this University and received his Doctorate (1993) in Mineralogy and Economic Geology from the University of Hamburg (Germany), where he also served as a Visiting Professor. His main research interests are in the fields of ore mineralogy, the genesis of magmatic–hydrothermal ore deposits, the mineralogy and genesis of gemstones, and the mineralogy of oxidation zones of ore deposits. Panagiotis Voudouris has extensive experience in several industry and research projects including exploration activities for various magmatic-hydrothermal mineralization, and the mineralogical, mineral-chemical studies of precious, rare and critical metals and gemstones in Greece, China, Russia and Turkey. PV’s specialities also cover Geopark Development consultancy and the development of Mineralogy-Petrology museums. He is the Director of the Mineralogy and Petrology Museum at the National and Kapodistrian University of Athens, and a member of the Editorial Board of Journal Minerals (since 2010). He has published 113 scientific papers in international refereed journals, is the co-author of six IMA-approved new mineral species, and has co-authored seven books.