Date : 02.01.2012

Category : Talks and Presentations

New research on Bastnäsite from Pakistan

Recent research on the lesser-known mineral and gemstone Bastnäsite by Dr. Franz Herzog of SSEF. This is a fluor-carbonate containing Rare Earth elements (REE). The results of this study were presented at the IGC in July 2011 and are now available online.


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Date : 26.08.2011

Category : Talks and Presentations

Talk on Tokki pearls at IGC 2011 Conference

Dr. Michael S. Krzemnicki gave a talk at the 2011 International Gemmological Conference (IGC) meeting in Interlaken. It was entitled "Tokki Pearls: Additional cultured pearls formed during pearl cultivation: External and internal structures". This presentation presents new research results on these interesting types of pearls and what they can teach us about the formation of natural and cultured pearls. 


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Date : 12.07.2011

Category : SSEF around the globe, Talks and Presentations

SSEF co-organises 32nd International Gemmological Conference (IGC)

The Swiss Gemmological Institute SSEF is co-organising the 32nd International Gemmological Conference (IGC) that will take place July 13-17 2011 in Interlaken, Switzerland. This gathering of leading international gemmologists promises to be an interesting conference about gemmology and the science of gemstone testing.


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Date : 13.04.2011

Category : SSEF around the globe, Talks and Presentations

Publication on new bead materials in cultured pearls

We authored an article in the latest edition of the Journal of Gemmology on the appearance of new bead materials in cultured pearls. This article reports on the use of Chinese freshwater cultured pearls and natural pearls as beads in Pinctada Margaritifera and Pinctada Maxima oysters. Hänni, H.A., Krzemnicki, M.S. & Cartier, L.E. (2010) Appearance of new bead material in cultured pearls. J. Gemm. Ass. GB Vol. 23, No. 1-4, p. 31-37


Download abstract (pdf)       Contact us for full article 

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