Prof. Dr. Andy Shen

Professor Shen is the Hubei Provincial Distinguished Professor in the Gemmological Institute, China University of Geosciences (Wuhan) since 2013. He is also the Editor-in-Chief of the Chinese Journal of Gems and Gemmology, published by China University of Geosciences in Chinese and English. He is the Vice Chairman of the Commission of Gem Materials (CGM) in International Mineralogical Association (IMA), a member of the Scientific Committee of The Dr. Eduard Gübelin Research Scholarship and a member of the Advisory Board of the Gemstones and Sustainable Development Knowledge Hub at the University of Delaware, USA. He is also on the Editorial Boards of the Gems and Gemology as well as The Journal of Gemmology. He was a Research Scientist at the Gemological Institute of America (GIA), an Associated Research Scientist at California Institute of Technology and a University Lecturer at Cambridge University, UK. He obtained his Ph.D. from Cornell University and did his postdoctoral work at the Bayerisches Geoinstitut at Bayreuth, Germany. Currently, his research is focused on applying physical and chemical principles in understanding various physical properties of gemstones and minerals. Current projects focus on various studies on diamonds, spinels, beryls, sunstones and other gem materials, etc. His goal is to apply new methods and technologies to the study of gem materials and apply promote the scientific aspect of gemology, what he calls “Gem Sciences”.

An updated study on the role of H and Fe in Ametrine and their relationships with colour


Recent advances in new scientific instrumentation has helped clarifying classic gemological questions such as the coloring mechanism of amethyst, which has been a focus of research for over 40 years. In this paper, we demonstrated some new results using the synchrotron x-ray absorption spectroscopy (XAS) and Fourier transformed infrared (FTIR) microscope. These results promoted our understanding of the nature of colors in amethyst and citrine.

Impressions from the first EGS 2007 in Idar-Oberstein

Register for the European Gemmological Symposium
on May 24 – 26, 2019 in Idar-Oberstein.

During the two days’ conference, you will enjoy numerous internationally recognized and distinguished speakers, as well as a broad spectrum of subjects including diamonds, coloured stone, pearls and jewellery.

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