William E. Boyajian
The Sapphires of Penglai, Hainan Island, China
A Gem-Quality Iridescent Orthoamphibole from Wyoming
R. V. Dietrich, John Sampson White, Joseph E. Nelen, and Kwo-Ling Chyi
Detection of Treatment in Two Unusual Green Diamonds
Emmanuel Fritsch, James E. Shigley, Carol M. Stockton, and John I. Koivula
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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