Presentation entitled “Kashmir sapphires: Potential and limitations of origin determination by chemical fingerprinting with LA ICP mass spectrometry”. GAHK seminar in June 2012 by Dr. Michael S. Krzemnicki.
2012 Christie’s expert lecture by Dr. Michael Krzemnicki on exceptional coloured gemstones and natural pearls.
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
Talk given by Dr. Michael Krzemnicki in Hong Kong in 2010 about spinel, a gemstone increasingly in vogue. History, sources, origin determations, synthetics and treatments.
Spinel: bold, beautiful and affordable. Jewellery News Asia (2010)
Author(s): M.S. Krzemnicki
New Tanzania mine uncovers source of exceptional rubies. Published in InColor, 2008.
Author(s): M.S. Krzemnicki, H.A. Haenni
New rubies from central Tanzania. Published in Gems & Gemology, 2008.
Author(s): H.A. Haenni
Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LAICPMS), a new method for gemstone analysis. Published in GAHK Journal, 2007.
Author(s): M.S. Krzemnicki, T. Pettke, H.A. Haenni
The Origin Determination of Gemstones: Challenges and Perspectives. Published in InColor, 2007.
Author(s): M.S. Krzemnicki
Sapphires from New Zealand. Published in 2006.
Author(s): L. Kiefert, M.S. Krzemnicki, G. Du Toit, R. Befi, K. Schmetzer