L. K. Spencer, S. David Dikinis, Peter C. Keller, and Robert E. Kane
An Update on Color in Gems. Part 3: Colors Caused by Band Gaps and Physical Phenomena
Emmanuel Fritsch and George R. Rossman
Carol M. Stockton
Examination of Three-Phase Inclusions in Colorless, Yellow, and Blue Sapphires from Sri Lanka
Karl Schmetzer and Olaf Medenbach
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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