The PDF version of this issue is available at no charge. Visit www.gia.eduThe Gemological Properties of the De Beers Gem-Quality Synthetic DiamondsJames E. Shigley, Emmanuel Fritsch, Carol M. Stockton, John I. Koivula, C. W. Fryer, Robert E. Kane, David R. Hargett, and Clayton W. WelchThe History and Gemology of Queen Conch "Pearls"Emmanuel Fritsch and Elise B. MisiorowskiThe Seven Types of Yellow Sapphire and Their Stability to LightKurt Nassau and G. Kay Valente 1987 Annual IndexEvery 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: 438701
