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Fall 1998, Volume 34, Issue 3

EDITORIAL

Demystifying Diamond Cut p.157

FEATURE ARTICLES

Modeling the Appearance of the Round Brilliant Cut Diamond: An Analysis of Brilliance p.158-p.183
T. Scott Hemphill, Ilene M. Reinitz, Mary L. Johnson, and James E. Shigley
Cultured Abalone Pearls from New Zealand p.184-p.200
Cheryl Y. Wentzell

NOTES AND NEW TECHNIQUES

Estimating Weights of Mounted Colored Gemstones p.202-p.211
Charles I. Carmona

REGULAR FEATURES

Gem Trade Lab Notes p.212-p.217
Lab Notes highlight: True double star in 8.19 ct ruby p.217
Gem News p.218-p.230
1998 Challenge Winners p.231
Book Reviews p.232-p.233
Gemological Abstracts p.234-p.242

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