The Gemological Institute of America announced that chief
gemologist John Koivula will present Macro
and Micro: Inclusions and Gem Formation on March 19 at Bowers Museum in
Santa Ana, Calif. The presentation will be followed by a reception.

Koivula has authored or coauthored more than 800 articles
on gemstone inclusions and related topics.
He also worked with the late Dr. Edward J. Gübelin to create all three
volumes of Photoatlas of Inclusions in
Gemstones. Koivula’s book The
MicroWorld of Diamonds covers the microscopic world of natural diamonds,
synthetics, simulants, and enhancements. He has been a contributor to several
other books including the Glossary of
Geology, the fifth edition of Robert Webster’s Gems: Their Sources, Descriptions and Identification, GIA’s Diamond Dictionary, and Geologica: Earth’s Dynamic Forces.

The lecture will begin at 1:30 p.m. on March 19. Tickets,
which include admission to the lecture, reception, and all-day access to the
museum, can be purchased in advance for $25 from Lesley Ann Hamilton at lahamilton@bowers.org. Lecture-only
tickets are $15 ($12 for Bowers members) and can be purchased on the museum website.

John Koivula,
GIA Chief Gemologist (photo courtesy of GIA)

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