FeatureGems & Gemology, Fall 2015, Vol. 51, No. 3Colombian Trapiche Emeralds: Recent Advances in Understanding Their Formation (英語)Isabella Pignatelli, Gaston Giuliani, Daniel Ohnenstetter, Giovanna Agrosì, Sandrine Mathieu, Christophe Morlot と Yannick BranquetPDFをダウンロード
