John I. Koivula

Chief Research Gemologist
GIA Gem Laboratory
Gemological Institute of America (GIA)
5355 Armada Drive
Carlsbad, California 92008
Tel: 760-603-4569
Fax: 760-603-4566
E-mail: jkoivula@gia.edu

John Koivula spent forty three years studying and photographing the microworld of gemstones. He has published more than 800 articles and notes on gemstone inclusions and related topics, and is a contributor to several books including the American Geological Institutes Glossary of Geology, Robert Webster’s Gems, and the GIA’s Diamond Dictionary. Mr. Koivula is co-author of the Photoatlas of Inclusions in Gemstones, and author of The MicroWorld of Diamonds. With Dr. E. Gübelin, he is completing Photoatlas of Inclusions in Gemstones: Volume 2. John holds university degrees in geology and chemistry, the gemological credentials; G.G., C.G., F.G.A., was awarded fellowship in the Royal Microscopical Society, and also serves on the executive board of the International Gemmological Conference group (IGC). He is and honorary life member of the Finnish Gemmological Society and the Gemmological Association of Great Britain, and was named as one of the 64 most influential people of the 20th century in the jewelry industry by Jewelers’ Circular Keystone Magazine. His awards include the Robert M. Shipley and Richard T. Liddicoat awards from the American Gem Society, the Scholarship Foundation Award from the American Federation of Mineralogical Societies, and the Antonio C. Bonanno Award for excellence in gemology by the international Accredited Gemologists Association.

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