The Beryl Group – an Overview
The Beryl Group – an Overview. Published in Journal of the Gemmological Association of Hong Kong GAHK, 2020, Volume XLI, 48-54.
Ethiopia: New Source for Sapphires and Emeralds
In 2016 the first emeralds appeared in the gem trade which reportedly came from new deposits discovered near the town of Shakiso in southern Ethiopia. Soon after, some of these stones partly of high quality were submitted to the SSEF and we were able to collect microscopic and analytical data and to integrate a
New Emeralds from Afghanistan
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
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
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?
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
Colourful Treasures of Nature: Ruby, Sapphire, Emerald & Pearls (2012)
2012 Christie’s expert lecture by Dr. Michael Krzemnicki on exceptional coloured gemstones and natural pearls.
Asterism in beryl, aquamarine and emerald- an update
Asterism in beryl, aquamarine and emerald- an update. Published in Journal of Gemmology, 2004. Author(s): K. Schmetzer, L. Kiefert, H.A. Haenni
Der Binntal Smaragd als Juwel
Der Binntal Smaragd als Juwel. Published in Schweizer Strahler, 2003. Author(s): M.S. Krzemnicki, G. Bosshart
Les nouvelles mines d’émeraudes de la Pita (Colombie)
Les nouvelles mines d’émeraudes de la Pita (Colombie). Published in Revue A.F.G. by Fritsch et al (2002)