Graeserite, a new mineral species from the derbylite group from the Monte Leone nappe, Binntal region, eastern Alps, Switzerland. Published in Canadian Mineralogist, 1998.
Author(s): M.S. Krzemnicki, E. Reusser
Trapiche-Rubine. Published in GZ, 1997.
Author(s): K. Schmetzer, H.A. Haenni, H.-J. Bernhardt, D. Schwarz
Über die Bildung von Perlmutter und Perle. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1997.
Author(s): H.A. Haenni
A Raman microscope in the gemmological laboratory: first experiences of application. Published in Journal of Gemmology, 1997.
Author(s): H.A. Haenni, L. Kiefert, J.-P. Chalain
Investigations on sapphires from an alkali basalt, South West Rwanda. Published in Journal of Gemmology, 1996.
Author(s): M.S. Krzemnicki, H.A. Haenni, R. Guggenheim, D. Mathys
Ein neues Vorkommen im Süden von Madagaskar. Published in 1996.
Author(s): L. Kiefert, K. Schmetzer, M.S. Krzemnicki, H.-J. Bernhardt, H.A. Haenni
Raman microprobe fingerprints fillings. Published in Thailand Jewellery Review, 1996.
Author(s): H.A. Haenni
How to identify fillings in emeralds using Raman spectroscopy. Published in Jewellery News Asia, 1996.
Author(s): H.A. Haenni, L. Kiefert, J.-P. Chalain
Ein Renishaw Raman Mikroskop im gemmologischen Labor: erste Erfahrungen bei der Anwendung. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1996.
Author(s): H.A. Haenni, L. Kiefert, J.-P. Chalain, I.C. Wilcock
A short synopsis of pearls: natural, cultured, imitation. Published in 1995.
Author(s): H.A. Haenni