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Fall 2004, Volume 40, Issue 3

EDITORIAL

Unlocking the Secrets of the Fourth C p.197-p.198

FEATURE ARTICLES

A Foundation for Grading the Overall Cut Quality of Round Brilliant Cut Diamonds p.202-p.228
Thomas M. Moses, Mary L. Johnson, Barak Green, Troy Blodgett, Kim Cino, Ron H. Geurts, Al M. Gilbertson, T. Scott Hemphill, John M. King, Lisa Kornylak, Ilene M. Reinitz, and James E. Shigley

NOTES AND NEW TECHNIQUES

Amethyst from Four Peaks, Arizona p.230-p.238
Jack Lowell and John I. Koivula

REGULAR FEATURES

Lab Notes p.240-p.251
Featured Lab Note: Rubies That Have Been Clarity Enhanced with a Lead-Glass Filler p.247-p.249
Gem News International p.252-p.269
Featured Gem News International: Hessonite from Afghanistan p.258-p.259
Featured Gem News International: Spessartine and Almandine-Spessartine from Afghanistan p.261-p.263
Book Reviews p.270-p.272
Gemological Abstracts p.273-p.280

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