Dr. Tao Hsu and Wim Vertriest, GIA

Dr. Tao Hsu received her Ph.D. in geology from the University of Southern California and a gemology bachelor degree from China University of Geosciences (Beijing). Before joining GIA, she worked briefly at NGTC lab for a year and gained her FGA, DGA and GG diplomas. Dr. Hsu has been the technical editor for Gems & Gemology since she joined GIA in 2012 and served various roles in course development and content strategy. She is based at GIA in Carlsbad, California, where she currently serves as the director of global professional development for GIA education

Wim Vertriest graduated from the Catholic University of Leuven (KU Leuven) in Belgium. He obtained a masters in Geology in 2014, specializing in ‘Geodynamics & Geofluids’ and also gained his FGA and GG diplomas. Since joining GIA in 2015, Wim has participated in GIA Field Expeditions to numerous gem mining areas around the world. He has (co-)authored several articles on new gemstone localities, updates on existing mining localities, in-depth gemological studies and treatment experiments. In his role as supervisor, Wim is overseeing the field gemology department and curates GIA’s colored stone research collection in Bangkok.