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Fall 2001, Volume 37, Issue 3
EDITORIAL
Shedding Light on "Fire" p.173
William E. Boyajian
FEATURE ARTICLE
Modeling the Appearance of the Round Brilliant Cut Diamond: An Analysis of Fire, and More About Brilliance p.174-p.197
Ilene M. Reinitz, Mary L. Johnson, T. Scott Hemphill, Al M. Gilbertson, Ron H. Geurts, Barak D. Green, and James E. Shigley
NOTES AND NEW TECHNIQUES
Pyrope from the Dora Maira Massif, Italy p.198-p.204
Alessandro Guastoni, Federico Pezzotta, Margherita Superchi, and Francesco Demartin
Jeremejevite: A Gemological Update p.206-p.211
Kenneth Scarratt, Donna Beaton, and Garry DuToit
REGULAR FEATURES
Gem Trade Lab Notes p.212-p.219
Lab Notes highlight: Heat-Treated Black Diamond, Before and After p.214-p.215
Matt Hall and Thomas Moses
2001 Challenge Winners p.220
Gem News International p.222-p.245
GNI highlight: Nigeria as a new source of copper-manganese-bearing tourmaline p.239-p.240
Christopher P. Smith, George Bosshart, and Dietmar Schwarz
Book Reviews p.246-p.248
Gemological Abstracts p.249-p.258
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