Saphirs de couleur fantaisie, diversité multicolore d’une gemme classique
Saphirs de couleur fantaisie; diversité multicolore d’une gemme classique Author(s): M.S. Krzemnicki
Fantasiefarbene Saphire: Die attraktive Farbenvielfalt eines klassischen Edelsteins
Fantasiefarbene Saphire: Die attraktive Farbenvielfalt eines klassischen Edelstein. Gold’Or (2011) Author(s): M.S. Krzemnicki
Visit to Tanzanian spinel and corundum deposits (2010)
Presentation at Swiss Gemmological Society about trip to spinel and corundum deposits in Tanzania in October 2009 by Dr. Walter Balmer and Dr. Michael Krzemnicki
How to get the blues out of the pink- detection of low temperature treatment of pink sapphires (2010)
Presentation at Swiss Gemmological Society about trip to spinel and corundum deposits in Tanzania in October 2009 by Dr. Walter Balmer and Dr. Michael Krzemnicki
Observations on treated ruby and sapphire
Observations on treated ruby and sapphire. Published in Taiwan Jewellery World Magazine, 2006. Author(s): H.A. Haenni
Sapphires from New Zealand
Sapphires from New Zealand. Published in 2006. Author(s): L. Kiefert, M.S. Krzemnicki, G. Du Toit, R. Befi, K. Schmetzer
Are new sapphires from Sri Lanka diffusion-treated or not?
Are new sapphires from Sri Lanka diffusion-treated or not? Published in Jewellery News Asia, 2004. Author(s): H.A. Haenni
Orange treated sapphire: towards finding a name for a new product
Orange treated sapphire: towards finding a name for a new product. Published in GAHK Journal, 2002. Author(s): H.A. Haenni
Eine neue Diffusionsbehandlung liefert orangefarbene und gelbe Saphire
Eine neue Diffusionsbehandlung liefert orangefarbene und gelbe Saphire. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 2002. Author(s): H.A. Haenni, T. Pettke
Ein Besuch bei den Saphirkochern von Chantaburi
Ein Besuch bei den Saphirkochern von Chantaburi. Published in GoldOr, 2002. Author(s): H.A. Haenni