Summer 1988

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The PDF version of this issue is available at no charge. Visit www.gia.edu The Diamond Deposits of Kalimantan, BorneoL. 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 PhenomenaEmmanuel Fritsch and George R. Rossman Pastel PyropesCarol M. Stockton Examination of Three-Phase Inclusions in Colorless, Yellow, and Blue Sapphires from Sri LankaKarl 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). GIA students and alumni save 10% on back issues! Enter coupon code GGALUM at checkout. SKU: 438803 Show more