Be-detection by FTIR on corundum; a preliminary report
Be-detection by FTIR on corundum; a preliminary report. Published in IGC 34 Lithuania Abstract Proceedings, 69-71. Author(s): W.A. Balmer, M.S. Krzemnicki
Olivine – Peridot
Olivine – Peridot. Published in Journal of the Gemmological Association of Hong Kong GAHK, Vol. 35, 35-37. Author(s): H.A. Haenni
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
Switzerland’s SSEF and Gübelin Gem Lab agreeto harmonise “pigeon blood red” and “royal blue” standards
The Swiss-based Gübelin Gem Lab and Swiss Gemmological Institute SSEF, recognised as the leading laboratories for coloured stone testing, have agreed to harmonise their standards for the colour terms “pigeon blood red” and “royal blue.” Their goal is to standardise the usage of these terms for the bene
L’identification du traitement HPHT au SSEF (2015)
Presentation by Jean-Pierre Chalain at 2015 Swiss Gemmological Society conference on HPHT treatment detection at SSEF
SSEF inaugurates new state-of-the-art laboratory in Basel
The Swiss Gemmological Institute (SSEF), one of the world’s most respected gem research, education and grading institutions, has inaugurated a state-of-the-art laboratory in Basel, more than doubling the size of its previous facility and enabling a massive expansion of the services it has provided the gemston
Contributions de la gemmologie de laboratoire à l’identification du traitement HPHT du diamant
Contributions de la gemmologie de laboratoire à l’identification du traitement HPHT du diamant. Video presentation by Jean-Pierre Chalain in 2014 at the University of Nantes.
A comparative study of Jadeite, Kosmochlor and Omphacite jades from Myanmar, and suggestions for a practical nomenclature
A comparative study of Jadeite, Kosmochlor and Omphacite jades from Myanmar, and suggestions for a practical nomenclature. Published in the Journal of Gemmology, 2014, 34, 3, 210–229. Author(s): L. Franz, T.T. Sun, H.A. Haenni, C. de Capitani, T. Thanasuthipitak, W. Atichat
Polycristalline kyanite from Tanzania
Polycristalline kyanite from Tanzania. Published in Journal of Gemmology, 2014, 4, 294. Author(s): M.S. Krzemnicki
Colourless to near colourless diopside from Canada and Kenya
Colourless to near colourless diopside from Canada and Kenya. Published in Journal of Gemmology, 2014, 4, 291-292. Author(s): M.S. Krzemnicki