Asterism in beryl, aquamarine and emerald- an update
Asterism in beryl, aquamarine and emerald- an update. Published in Journal of Gemmology, 2004. Author(s): K. Schmetzer, L. Kiefert, H.A. Haenni
Pezzottaite, a new mineral and gem
Pezzottaite, a new mineral and gem. Published in Journal of Gemmology, 2004. Author(s): H.A. Haenni, M.S. Krzemnicki
Nulla parte mirabilior: Zur Verwendung von Edelsteinen in der Antike
Nulla parte mirabilior: Zur Verwendung von Edelsteinen in der Antike. Published in 2003. Author(s): S. Haeberli, L. Kiefert
Pezzottaite – a new mineral
Pezzottaite – a new mineral. Published in GAHK Journal, 2003. Author(s): H.A. Haenni, M.S. Krzemnicki
Orange topaz with synthetic hematite coating
Orange topaz with synthetic hematite coating. Published in Gems & Gemology, 2002. Author(s): M.S. Krzemnicki
Edelsteine heute: echt, behandelt oder synthetisch?
Edelsteine heute: echt, behandelt oder synthetisch?. Published in Der Sachverständige, 2002. Author(s): H.A. Haenni
Raman spectroscopic applications in gemmology
Raman spectroscopic applications in gemmology. Published in 2001. Author(s): L. Kiefert, H.A. Haenni, T. Ostertag
Wissenswertes über Edelsteine
Wissenswertes über Edelsteine. Published in 2001. Author(s): H.A. Haenni
Update on Moissanite identification
Update on Moissanite identification. Published in GAHK Journal, 2000. Author(s): J.-P. Chalain
An imitation of black diamond: artificial black cubic zirconium oxide
An imitation of black diamond: artificial black cubic zirconium oxide. Published in Gems & Gemology in 1999. Author(s): J.-P. Chalain