World Of Gems Conference 2017 Proceedings Book

Dr. Emmanuel Fritsch Dr. Emmanuel Fritsch is a Professor of Physics at the University of Nantes in France. He holds a Geological Engineering degree from the ENSG, Nancy, Eastern France, and a Ph.D. from the Sorbonne (University Paris VII) in Paris. He worked for nearly ten years at the Gemological Institute of America (GIA) in the USA, where he became a Graduate Gemologist, and was Manager of GIA Research from 1992 to 1995. His research is cur- rently conducted at the Institut des Matériaux Jean Rouxel (IMN-CNRS) in Nantes, France. Dr. Fritsch has a wide range of interests, from laboratory techniques applied to gemology, to color and luminescence in gems (especially diamonds), geographical ori- gin, treated and synthetic gems, opals and pearls. His self-assigned mission is to make gemology more scientific. He has authored over 340 articles, more than fifteen book chapters, and lectured at over 300 conferences. He is responsible for the DUG (Diplôme d’Université de Gemmologie) diploma. He has received many awards, including the 2013 Bonnano Award for Excellence in Gemology, and is one of the three honorary fel- lows of the Gemmological Association of Great Britain. Al Gilbertson, GIA GG, CG (AGS) In 2017, Al Gilbertson received AGA’s Antonio C. Bonanno Award for Excellence in Gemol- ogy. Gilbertson is Project Manager, Cut Research at the GIA’s Carlsbad laboratory. His book, American Cut: The First 100 Years, is regarded as the standard work on the evolution of the round brilliant cut. As a member of the Cut Task Force for the AGS lab, he developed the tools that became the core of the AGS ASET light performance model. The GIA hired Gilbertson in 2000 to be a part of its team to research diamond cut evaluation, and he became an important part of the group that created the institute’s cut grading system for round brilliant dia- monds. Currently, he is studying the influence of proportions and other factors on the appearance of fancy shape diamonds, working towards a cut grading system for them. GIA The Robert Mouawad Campus 5345 Armada Drive Carlsbad, CA 92008 al.gilbertson@gia.edu SPEAKERS WORLD OF GEMS CONFERENCE V - 56 - SEPTEMBER 2017