Winter 1994

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The PDF version of this issue is available at no charge. Visit www.gia.edu Color Grading of Colored Diamonds in the GIA Gem Trade LaboratoryJohn M. King, Thomas M. Moses, James E. Shigley, and Yan LiuRuby and Sapphire from the Southern Ural Mountains, RussiaAlexander J. KissinGem Corundum in Alkali Basalt: Origin and OccurrenceA.A. Levinson and F.A. Cook 1994 Annual Index Every issue also includes the most up-to-date reports from the GIA Laboratory (Lab Notes) and gemologists around the world (Gem News International).GIA students and alumni save 10% on back issues! Enter coupon code GGALUM at checkout. Usually ships in 3-5 business days. SKU: 439401 Show more