Colourful treasures of nature: ruby, sapphire, emerald & pearls
Author(s) : -
Date : 2012
2012 Christie’s expert lecture by Dr. Michael Krzemnicki on exceptional coloured gemstones and natural pearls.
Tag : Sapphire
Fancy coloured sapphires: the beauty beyond “blue” of sapphire and “red” of rubies
Author(s) : -
Date : 2011
Presentation on the fascinating diversity and range of colours found in corundum, going far beyond the blue of sapphire and red of ruby.
Author(s): M.S. Krzemnicki
Saphirs de couleur fantaisie, diversité multicolore d’une gemme classique
Author(s) : -
Date : 2011
Saphirs de couleur fantaisie; diversité multicolore d’une gemme classique
Author(s): M.S. Krzemnicki
Fantasiefarbene Saphire: Die attraktive Farbenvielfalt eines klassischen Edelsteins
Author(s) : -
Date : 2011
Fantasiefarbene Saphire: Die attraktive Farbenvielfalt eines klassischen Edelstein. Gold’Or (2011)
Author(s): M.S. Krzemnicki
Observations on treated ruby and sapphire
Author(s) : -
Date : 2006
Observations on treated ruby and sapphire. Published in Taiwan Jewellery World Magazine, 2006.
Author(s): H.A. Haenni
Sapphires from New Zealand
Author(s) : -
Date : 2006
Sapphires from New Zealand. Published in 2006.
Author(s): L. Kiefert, M.S. Krzemnicki, G. Du Toit, R. Befi, K. Schmetzer
Breakthrough in orange – the potential of GemLIBS in gem testing
Author(s) : -
Date : 2005
Breakthrough in orange – the potential of GemLIBS in gem testing. Published in Jewellery News Asia, 2005.
Author(s): H.A. Haenni
GemLIBS: a new analytical instrument to analyse beryllium in orange sapphires
Author(s) : -
Date : 2004
GemLIBS: a new analytical instrument to analyse beryllium in orange sapphires. Published in GAHK Journal, 2004.
Author(s): H.A. Haenni, M.S. Krzemnicki
Are new sapphires from Sri Lanka diffusion-treated or not?
Author(s) : -
Date : 2004
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
Author(s) : -
Date : 2002
Orange treated sapphire: towards finding a name for a new product. Published in GAHK Journal, 2002.
Author(s): H.A. Haenni