Emeralds from Afghanistan are well known in the trade for their beauty and size, and are considered a historic source of fine emeralds. Despite the political turmoil of recent decades, these mines have recently produced again a number of gems of outstanding quality and size, as we could observe at SSEF during t
Gemmological investigations on pearls and emeralds using neutron imaging. Published in Physics Procedia, 2017, 88, 134-139 Link to article 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.
Asterism in beryl, aquamarine and emerald- an update. Published in Journal of Gemmology, 2004. Author(s): K. Schmetzer, L. Kiefert, H.A. Haenni
Les nouvelles mines d’émeraudes de la Pita (Colombie). Published in Revue A.F.G. by Fritsch et al (2002)
Emerald treatments: their effects and how to recognize them. Published in 2001. Author(s): L. Kiefert