| Dr. Ahmadjan Abduriyim |
Gemmological Association of All Japan, Tokyo, Japan |
| Edward Boehm |
JOEB Enterprises, Solana Beach, California |
| Dr. James Butler |
Naval Research Laboratory, Washington, DC |
| Jean-Pierre Chalain |
SSEF, Basel, Switzerland |
| Gagan Choudhary |
Gem Testing Laboratory, Jaipur, India |
| Jim Clanin |
JC Mining, Hebron, Maine |
| Dr. Alan Collins |
King’s College, London, England |
| Branko Deljanin |
EGL Canada, Vancouver, British Columbia |
| Dr. Barbara Dutrow |
Louisiana State University, Baton Rouge |
| Dr. Filip de Weerdt |
International Diamond Laboratories, Dubai |
| Dr. Robert Downs |
University of Arizona, Tucson, Arizona |
| Garry Du Toit |
GIA Research (Thailand), Bangkok |
| Manfred Eickhorst |
System Eickhorst, Hamburg, Germany |
| Dr. Emmanuel Fritsch |
Institut des Matériaux, Nantes, France |
| Dr. Gaston Giuliani |
CRPG/CNRS, Nancy, France |
| Chaman Golecha |
Chennai, India |
| Dr. Lee Groat |
University of British Columbia, Vancouver, Canada |
| Matthew Hall |
GIA Laboratory, New York |
| Thomas Hainschwang |
GEMLAB Gemmological Laboratory, Balzers, Liechtenstein |
| Dr. George Harlow |
American Museum of Natural History, New York |
| Dr. Peter Heaney |
Penn State University, University Park, Pennsylvania |
| Dr. Ulrich Henn |
DSEF, Idar-Oberstein, Germany |
| Dr. Jaroslav Hyrsl |
Kolin, Czech Republic |
| Robert Kane |
Fine Gems International, Helena, Montana |
| Dr. Lore Kiefert |
AGTA Gemological Testing Center, New York |
| John I. Koivula |
GIA Laboratory, Carlsbad, California |
| Dr. Michael Krzemnicki |
SSEF, Basel, Switzerland |
| Dr. Simon Lawson |
De Beers DTC Research Centre, Maidenhead, UK |
| Dr. Robert Linares |
Apollo Diamond Inc., Medfield, Massachusetts |
| Dr. David London |
University of Oklahoma, Norman, Oklahoma |
| Shane McClure |
GIA Laboratory, Carlsbad, California |
| Dr. Claudio Milisenda |
DSEF, Idar-Oberstein, Germany |
| Dr. Mark Newton |
University of Warwick, Coventry, UK |
| Franck Notari |
GemTechLab Laboratory, Geneva, Switzerland |
| Dr. Daniel Nyfeler |
Gübelin Gem Lab, Lucerne, Switzerland |
| Vincent Pardieu |
Gübelin Gem Lab, Lucerne, Switzerland |
| Dr. Federico Pezzotta |
Museo Civico di Storia Naturale di Milano, Milan, Italy |
| Dr. Jeffery Post |
Smithsonian Institution, Washington, DC |
| Dr. George Rossman |
California Institute of Technology, Pasadena, California |
| Dr. Karl Schmetzer |
Petershausen, Germany |
| Dr. Dietmar Schwarz |
Gübelin Gem Lab, Lucerne, Switzerland |
| Dr. William (Skip) Simmons |
University of New Orleans, Louisiana |
| Dr. Sergey Smirnov |
Russian Academy of Science, Novosibirsk, Russia |
| Christopher Smith |
American Gemological Laboratories, New York |
| Tay Tae Sun |
Far East Gemological Laboratory, Singapore |
| Dr. Victor Thomas |
Tairus Created Gems, Novosibirsk, Russia |
| Dr. Jef Van Royen |
HRD Research, Lier, Belgium |
| Dr. Wuyi Wang |
GIA Laboratory, New York |
| Dr. Pornsawat Wathanakul |
Kasetsart University/Gem & Jewelry Inst. of Thailand, Bangkok |
| Dr. Christopher Welbourn |
University of Warwick, Coventry, UK |
| Dr. Hanco Zwaan |
National Museum of Natural History, Leiden, Netherlands |
