Preserving the heritage of gemstone regions and resources worldwide:Future directions. Published in Episodes, 2017, 40, 3, 233-236.
Author(s): L.E. Cartier
Presentation on origin determination of coloured gemstones by Dr. Michael Krzemnicki at 2014 Scottish Gemmological Conference.
Colour change effects in gemstones: Causes and perception. Published in IGC 2013 Vietnam Abstract Proceedings, 110-113.
Author(s): M.S. Krzemnicki, W. Zhou, J. Maizlan
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
Christie’s Hong Kong Spring Auction lecture by Dr. Michael Krzemnicki. “Gemstones and the fascination of colour”
Damage to cut gemstones. Published in The Valuer, 2009.
Author(s): H.A. Haenni
The Origin Determination of Gemstones: Challenges and Perspectives. Published in InColor, 2007.
Author(s): M.S. Krzemnicki
Uncommon minerals of gemstone quality from Tanzania. Published in GIT Proceedings, 2006.
Author(s): H.A. Haenni
Identification of gemstone treatments with Raman spectroscopy. Published in Proceedings of SPIE, 2000.
Author(s): L. Kiefert, H.A. Haenni, J.-P. Chalain
Short notes on some gemstone treatments. Published in GAHK Journal, 1998.
Author(s): H.A. Haenni