Zur Bestimmung von GE POL Diamanten: erste Erkenntnisse. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 2000.
Author(s): J.-P. Chalain, E. Fritsch, H.A. Haenni
Update on Moissanite identification. Published in GAHK Journal, 2000.
Author(s): J.-P. Chalain
Identification of GE POL diamonds: a second step. Published in Journal of Gemmology, 2000.
Author(s): J.-P. Chalain, E. Fritsch, H.A. Haenni
Identification of colourless HPHT treated diamonds (e.g. GE POL). Published in 2000.
Author(s): J.-P. Chalain, E. Fritsch, H.A. Haenni
Detection of GE POL treated diamonds. Published in 2000.
Author(s): J.-P. Chalain, H.A. Haenni, E. Fritsch
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