Gem Wealth of Tanzania
Dona M. Dirlam, Elise B. Misiorowski, Rosemary Tozer, Karen B. Stark, and Allen M. Bassett
Gamma-Ray Spectroscopy to Measure Radioactivity in Gemstones
Charles E. Ashbaugh III
Dyed Natural Corundum as a Ruby Imitation
K. Schmetzer, H.A. Hanni, E.P. Jegge, and F.-J. Schupp
An Update on Sumitomo Gem-Quality Synthetic Diamonds
James E. Shigley, Emmanuel Fritsch, Ilene Reinitz, and Mike Moon
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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