In 1983, a group of visionaries got together to create the ICA which became a globally recognized and respected organization in the jewelry trade worldwide. The founding members wanted to respond to the changing reality of the gemstone business, address industry problems and challenges and improve communication and understanding within the trade.

John G. Bares, John G. Bares, Inc., USA
Claude Barguirdjian, Claude Barguirdjian, France
N.R. Barot, Ruby Centre (Kenya) Ltd., Kenya
Gerhard Becker, Friedrich August Becker, Germany
Rudolph Biehler, Ernst Farber, Germany
J.F. de Ceballos Romay, Instituto Mexicano de Gemologia, Mexico
Yoshiko Doi, Association of Japan Gem Trust, Japan
Rashmikant Durlabhji (deceased), MIS R.Y. Durlabhji, India
Israel Z. Eliezri, Colgem EL 97 Ltd., Israel
Mohamed Saleem M. Fazli, Saleems Ltd., Sri Lanka
Manuel Freyermuth, Instituto Mexicano de Gemologia, Mexico
Prof. Dr. Edward J. Gubelin (deceased), Switzerland
Gerard Grospiron, Etablissements Grospiron, France
Bill Jewell, Opalart Pty Ltd., Australia
Alan Jobbins, Alan Jobbins, UK
Hidetaka Kato, Kashikey Co, Ltd., Japan
Hiroshi Komatsu, Japan Pearl Promotion, Japan
Con Lenan, The Brick Development Association, UK
Chi Chan Leung, Tai Yip Trading Company, Hong Kong
Richard T. Liddicoat Jr (deceased), Gemological Institute of America, USA
Reginald C. Miller, Reginald C. Miller LLC., USA
Eugene Naftule (deceased), Naftule Fils S.A., Switzerland
Roland Naftule, Nafco Gems, Ltd., USA
Yip Kun Poon, Cogent Trading Co, Ltd., Hong Kong
Stuart Robinson, Barnett Robinson, Inc., USA
Michael D. Roman (deceased), Jewelers of America, USA
Maurice Shire, (deceased), Maurice Shire, Inc., USA
Yasukazu Suwa, Suwa & Son Inc., Japan
Konrad Wild (deceased), Johann Philipp Wild, Germany
Chi Wai Yau, Yau’s Gems Limited, Hong Kong
Ray Zajicek, Equatorian Imports Inc., USA

About Us

The ICA is a worldwide body specifically created to benefit the global colored gemstone industry by advancing and promoting the knowledge and appreciation of colored gemstones.
New York Office: 31 West 47th St., Suite 1103, New York, NY 10036
+1 (212) 620-0900
ica (at)
Hong Kong Office: Unit 311B, 3rd Floor, Heng Ngai Jewelry Centre No. 4 Hok Yuen Street East, Hung Hom, Kowloon, Hong Kong
+852 2365-9318
ica (at)

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