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  • Cover of Spring 2019 issue of Gems & Gemology, featuring colored gems on pure white background

Spring 2019

  • $15.00
A New Method for Determining Gem Tourmaline Species by LA-ICP-MS
Ziyin Sun, Aaron C. Palke, Christopher M. Breeding, and Barbara L. Dutrow

U-Pb Ages of Zircon Inclusions in Sapphires from Ratnapura and Balangoda (Sri Lanka) and Implications for Geographic Origin
Emilie Elmaleh, Susanne Theodora Schmidt, Stefanos Karampelas, Klemens Link, Lore Kiefert, Annette S¸ssenberger, and AndrÈ Paul

The Talisman of Charlemagne: New Historical and Gemological Discoveries
Gerard Panczer, Geoffray Riondet, Lauriane Forest, Michael S. Krzemnicki, Davy Carole, and Florian Faure

Provenance Discrimination of Freshwater Pearls by LA-ICP-MS and Linear Discriminant Analysis (LDA)
Artitaya Homkrajae, Ziyin Sun, Troy Blodgett, and Chunhui Zhou

Pleochroism and Color Change in Faceted Alexandrite: Influence of Cut and Sample Orientation
Karl Schmetzer

Land of Origins: A Gemological Expedition to Ethiopia
Wim Vertriest, Daniel Girma, Patcharee Wongrawang, Ungkhana Atikarnsakul, and Kevin Schumacher

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SKU: 19SP