The PDF version of this issue is available at no charge. Visit www.gia.edu Gem Localities of the 1990sJames E. Shigley, Dona M. Dirlam, Brendan M. Laurs, Edward W. Boehm, George Bosshart, and William F. LarsonGemstone Enhancement and Detection in the 1990sShane F. McClure and Christopher P. SmithSynthetic Gem Materials and Simulants in the 1990sJohn I. Koivula, Maha Tannous, and Karl SchmetzerTechnological Developments in the 1990s: Their Impact on GemologyMary L. JohnsonJewelry of the 1990sElise B. Misiorowski 2000 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: 4300011