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Jeff Harris 
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Dr. Harris is a senior research fellow at the University of Glasgow, Scotland, U.K. His research interests include the physical and chemical characteristics of diamond inclusions and how they relate to diamond formation in the earth’s mantle. |
Diamond occurrence and evolution in the earth's mantle
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David London
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Dr. London is the Norman R. Gelphman Professor and Stubbeman-Drace Presidential Professor in the School of Geology & Geophysics, University of Oklahoma, Norman. Dr. London is a leading authority on the origin and geochemical evolution of granitic pegmatites. |
Geochemical cycles of gem-forming elements: What it takes to make tourmaline, beryl, topaz, spodumene, and other pegmatitic gems |
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Gem Characterization Techniques
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George Rossman
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Dr. Rossman is Professor of Mineralogy at the California Institute of Technology, where he received the 2003-2004 Richard P. Feynman Prize for Excellence in Teaching. Among his many research interests is the study of how electromagnetic radiation interacts with minerals. |
Characterization of nanofeatures in gem materials |
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Emmanuel Fritsch 
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Formerly with GIA Research, Dr. Fritsch is Professor of Physics at the University of Nantes, France. Dr. Fritsch has published numerous articles, most related to the application of spectroscopy to gemology, the origin of color in gem materials, and treated and synthetic gems. |
A forecast of important techniques in the coming decade
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Lawrence W. Snee
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Dr. Snee is a research geologist with the U.S. Geological Survey, Denver, Colorado. He has more than 30 years of field experience and has published more than 300 articles, maps, books, and abstracts covering geologic research throughout the world. |
Afghanistan gem deposits: Studying newly reopened classics and looking for new deposits
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Federico Pezzotta
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Dr. Pezzotta is curator of mineralogy at the Museo Civico di Storia Naturale, Milan, Italy. He is a noted expert on the mineralogy of Madagascar, and has published numerous works on the subject. |
New gem localities in Madagascar
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James Butler
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Dr. Butler is head of the Gas/Surface Dynamics Section in the Naval Research Laboratory in Washington D.C. He has published over 190 papers in experimental chemical physics. |
Growth of CVD synthetic diamond |
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Ichiro Sunagawa
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Dr. Sunagawa is an emeritus Professor of Mineralogy at Tohoku University, Sendai, Japan. He has published more than 300 works in Japanese and English on mineralogy, gemology, and crystal growth. |
Growth, morphology, and perfection of single crystals: Basic concepts in discriminating natural from synthetic gemstones |
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General Gemology
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Shane McClure
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Mr. McClure is director of Identification Services at the GIA Gem Laboratory in Carlsbad, California. He is well known for his articles on gem identification. |
Source type classification of gem corundum
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Menahem Sevdermish
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Mr. Sevdermish is president of Advanced Quality Ltd., Ramat Gan, Israel, and the European Gemological Center, the major gemological institute in Israel. He is an internationally recognized authority on gem commercialization and the processing of gemstones. |
Color communication: The analysis of color in gem materials |
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Diamond and Corundum Treatments
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Ken Scarratt
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Formerly head of the AGTA Gemological Testing Center, Mr. Scarratt is research director for GIA Research in Bangkok. He has more than 30 years of laboratory experience. |
The treatment of ruby and sapphire over the last three decades, the implications for the integrity of the product, identification techniques, and the capabilities of gemological laboratories
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Mark Newton
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Dr. Newton is Professor of Physics at the University of Warwick, Coventry, U.K. His research interests include the electronic properties and lattice structures of diamond defects, as well as the diffusion of impurities and activation of dopants in diamond. |
Treated diamonds: A physicist’s perspective
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