GE POL Diamonds: Before and After
Christopher P. Smith, George Bosshart, Johann Ponahlo, Vera M.F. Hammer, Helmut Klapper, and Karl Schmetzer
Sapphires from Antsiranana Province, Northern Madagascar
Dietmar Schwarz, Jan Kanis, and Karl Schmetzer
Pre-Columbian Gems and Ornamental Materials from Antigua, West Indies
A. Reg Murphy, David J. Hozjan, Christy N. de Mille, and Alfred A. Levinson
Gem Quality Hauyne from the Eifel District, Germany
Lore Kiefert and H.A. Hanni
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.
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