Gemmological investigations on pearls and emeralds using neutron imaging. Published in Physics Procedia, 88, 134-139
Author(s): D. Mannes, C. Hanser, M.S. Krzemnicki, R.P. Harti, I. Jerjen, E. Lehmann
Emeralds and the saga of cleaning and filling fissures. Facette (2017)
Author(s): M.S. Krzemnicki
Case study on an emerald bead: Is it from the ancient mines in Egypt or not? Published in Journal of Gemmological Association of Hong Kong GAHK, 2015, 35, 46-49.
Author(s): M.S. Krzemnicki, L.E. Cartier, W. Zhou
2012 Christie’s expert lecture by Dr. Michael Krzemnicki on exceptional coloured gemstones and natural pearls.
Identification of filler substances in emeralds by infrared and Raman spectroscopy. Published in Journal of Gemmology, 1999.
Author(s): H.A. Haenni
Fracture filling in emeralds and its detection with laboratory methods. Published in ICA Gazette, 1998.
Author(s): H.A. Haenni
How to identify fillings in emeralds using Raman spectroscopy. Published in Jewellery News Asia, 1996.
Author(s): H.A. Haenni, L. Kiefert, J.-P. Chalain
Why epoxy-filled emeralds must be accepted. Published in 1993.
Author(s): H.A. Haenni
Filled emeralds: please face reality. Published in ICA Gazette, 1993.
Author(s): H.A. Haenni
The emeralds of Fazenda Boa Esperanca, Taua, Ceara, Brazil: occurence and properties. Published in Journal of Gemmology, 1988.
Author(s): D. Schwarz, H.A. Haenni, F.L. Martins Jr, M. Fischer