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
Agee hydrothermal synthetic emeralds. Published in JewelSiam, 1995.
Author(s): H.A. Haenni, L. Kiefert
Preliminary results on Agee hydrothermal synthetic emeralds. Published in 1994.
Author(s): H.A. Haenni, L. Kiefert
Émeraudes synthétiques hydrothermales Agee – Hydrothermal-synthetische Smaragde von Agee. Published in 1994.
Author(s): H.A. Haenni, L. Kiefert, J.-P. Chalain
How to identify Douros synthetic rubies. Published in Jewellery News Asia, 1994.
Author(s): H.A. Haenni, K. Schmetzer