Pink to Purple Sapphires from Ilakaka, Madagascar: Insights to Separate Unheated from Heated Samples by Stefanos Karampelas, Ugo Hennebois, Jean-Yves Mevellec, Vincent Pardieu, Aurélien Delaunay, Emmanuel Fritsch

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Identification of Some Gem Quality Blue to Green Li-Tourmalines by Lorenzo Pasetti, Laura Borromeo, Danilo Bersani, Sergio Andò, Jurgen Schnellrath, Ugo Hennebois, Stefanos Karampelas

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Spectroscopy and Microscopy of Corundum from Primary Deposits Found in Greece by Vilelmini Karantoni, Stefanos Karampelas, Panagiotis Voudouris, Vasilios Melfos, Lambrini Papadopoulou, Triantafyllos Soldatos, Constantinos Mavrogonatos

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Non-Destructive Study of Egyptian Emeralds Preserved in the Collection of the Museum of the Ecole des Mines by Maria Nikopoulou, Stefanos Karampelas, Eloïse Gaillou, Ugo Hennebois, Farida Maouche, Annabelle Herreweghe, Lambrini Papadopoulou, Vasilios Melfos, Nikolaos Kantiranis, Didier Nectoux, Aurélien Delaunay

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