Mary L. Johnson, Edward Boehm, Horst Krupp, Joachim W. Zang, and Robert C. Kammerling
Sapphires from Southern Vietnam
Christopher P. Smith, Robert C. Kammerling, Alice S. Keller, Adolf Peretti, Kenneth V. Scarratt, Nguyen Dang Khoa, and Saverio Repetto
"Ti-Sapphire": Czochralski-Pulled Synthetic Pink Sapphire from Union Carbide
Mary L. Johnson, Meredith E. Mercer, Emmanuel Fritsch, Patricia Maddison, 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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