Sam Muhlmeister, John I. Koivula, Robert C. Kammerling, Christopher P. Smith, Emmanuel Fritsch, and James E. Shigley
Emeralds and Green Beryls of Upper Egypt
Robert H. Jennings, Robert C. Kammerling, Andre Kovaltchouk, Gustave P. Calderon, Mohamed K. El Baz, and John I. Koivula
Reactor-Irradiated Green Topaz
Charles E. Ashbaugh III and James E. Shigley
Every issue also includes the most up-to-date reports from the GIA Laboratory (Lab Notes) and gemologists around the world (Gem News International).
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