The PDF version of this issue is available at no charge. Visit www.gia.edu "Paraíba"-type Copper-bearing Tourmaline from Brazil, Nigeria, and Mozambique: Chemical Fingerprinting by LA-ICP-MSAhmadjan Abduriyim, Hiroshi Kitawaki, Masashi Furuya, and Dietmar SchwarzIdentification and Durability of Lead Glass-Filled RubiesShane F. McClure, Christopher P. Smith, Wuyi Wang, and Matthew HallThe Characterization of Tortoise Shell and Its ImitationsThomas Hainschwang and Laurence Leggio 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: 430602
