Diopside needles as inclusions in demantoid garnet from Russia: A Raman microspectrometric study. Published in Gems & Gemology, 1999.
Author(s): M.S. Krzemnicki
Multicomponent inclusions in Nacken synthetic emeralds. Published in Journal of Gemmology, 1999.
Author(s): K. Schmetzer, L. Kiefert, H.-J. Bernhardt
Element mapping of trapiche rubies. Published in Journal of Gemmology, 1999.
Author(s): K. Schmetzer, Z. Beili, G. Yan, H.-J. Bernhardt, H.A. Haenni
Sur la formation de nacre et des perles. Published in Revue A.F.G., 1999.
Les grenats gemmes. Published in Revue A.F.G., 1999.
Author(s): H.A. Haenni
Identification of filler substances in emeralds by infrared and Raman spectroscopy. Published in Journal of Gemmology, 1999.
Author(s): H.A. Haenni
Synthetischer Moissanit und Diamant: Sichere Unterscheidung mit Hilfe des Reflektometers. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1999.
Author(s): J.-P. Chalain, M.S. Krzemnicki
Mise à jour sur la détermination des substances de remplissage dans les emeraudes. Published in Revue A.F.G., 1999.
Author(s): J.-P. Chalain
Détection des diamants GE POL. Published in Revue A.F.G., 1999.
Author(s): J.-P. Chalain, H.A. Haenni, E. Fritsch
An imitation of black diamond: artificial black cubic zirconium oxide. Published in Gems & Gemology in 1999.
Author(s): J.-P. Chalain