Unstable Colouration of Padparadscha-like Sapphires
Unstable Colouration of Padparadscha-like Sapphires. Published in Journal of Gemmology, 2018, 36(4), 346-354.
Yellow danburite from Namalulu, Tanzania, and Myanmar: Origin of Colour and Its Stability
Yellow danburite from Namalulu, Tanzania, and Myanmar: Origin of Colour and Its Stability. Published in Journal of Gemmology, 35, 5, 384-386. Author(s): C.P. Smith, M.S. Krzemnicki
Preserving the heritage of gemstone regions and resources worldwide: Future directions.
Preserving the heritage of gemstone regions and resources worldwide:Future directions. Published in Episodes, 2017, 40, 3, 233-236. Author(s): L.E. Cartier
From classic inclusions to neutrons (2017)
Presentation by Dr. Michael S. Krzemnicki at 2017 Swiss Gemmological Society conference in Zermatt. Talk entitled ‘From classic inclusions to neutrons: A ‘fresh’ look at modern gemmology’.
Modern Doublets from Germany and India
Modern Doublets from Germany and India. Published in Journal of Gemmology, 2015, 34, 6, 479-481. Author(s): H.A. Haenni, U. Henn
Saguaro Stone, a New Ornamental Material from Arizona (USA)
Saguaro Stone, a New Ornamental Material from Arizona (USA). Published in Journal of Gemmology, 2015, 7, 567-569.
News from the SSEF (2015)
Presentation by Jean-Pierre Chalain at 2015 Swiss Gemmological Society conference on HPHT treatment detection at SSEF
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
Alumosilicates: Andalusite, Kyanite, Sillimanite
Alumosilicates: Andalusite, Kyanite, Sillimanite. Published in Journal of Gemmological Association of Hong Kong GAHK, 2014, 34, 22-23. Author(s): H.A. Haenni