Gau Tyng F.
Gautestad Arild O.
Gay Michael L.
Gazelle Corporation
GE Interlogix Inc.
Gélifier Julien
Gem Optical Co., Ltd.
Gemological Institute of America (GIA)
Genelot Nicolas
Genex Technologies, Inc.
Gengler Peter
Gerani Stefania
Gerdom James
Gerlach Dianne S.
Geurts Ron
Gevers Hubert F.
Gher Marlin E.
GIA Gem Institute Corporation
Giakonoski Vasil
Gilbert Bruno James