Feature articles from this issue: A New Method for Determining Gem Tourmaline Species by LA-ICP-MSZiyin Sun, Aaron C. Palke, Christopher M. Breeding, and Barbara L. DutrowU-Pb Ages of Zircon Inclusions in Sapphires from Ratnapura and Balangoda (Sri Lanka) and Implications for Geographic OriginEmilie Elmaleh, Susanne Theodora Schmidt, Stefanos Karampelas, Klemens Link, Lore Kiefert, Annette Süssenberger, and André PaulThe Talisman of Charlemagne: New Historical and Gemological DiscoveriesGerard Panczer, Geoffray Riondet, Lauriane Forest, Michael S. Krzemnicki, Davy Carole, and Florian FaureProvenance Discrimination of Freshwater Pearls by LA-ICP-MS and Linear Discriminant Analysis (LDA)Artitaya Homkrajae, Ziyin Sun, Troy Blodgett, and Chunhui ZhouPleochroism and Color Change in Faceted Alexandrite: Influence of Cut and Sample OrientationKarl SchmetzerLand of Origins: A Gemological Expedition to EthiopiaWim Vertriest, Daniel Girma, Patcharee Wongrawang, Ungkhana Atikarnsakul, and Kevin Schumacher GIA students and alumni save 10% on back issues! Enter coupon code GGALUM at checkout. Usually ships in 3-5 business days. SKU: 4301902
