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
Red and green labradorite feldspar from the Congo
Red and green labradorite feldspar from the Congo. Published in Journal of Gemmology, 2004. Author(s): M.S. Krzemnicki
Synthetic Verneuil corundum with unusual color zoning
Synthetic Verneuil corundum with unusual color zoning. Published in Gems & Gemology, 2004. Author(s): L. Kiefert
Pezzottaite, a new mineral and gem
Pezzottaite, a new mineral and gem. Published in Journal of Gemmology, 2004. Author(s): H.A. Haenni, M.S. Krzemnicki
Pezzottait – ein neues Mineral
Pezzottait – ein neues Mineral. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 2004. Author(s): H.A. Haenni, M.S. Krzemnicki
Poudretteite: A rare gem species from the Mogok Valley
Poudretteite: A rare gem species from the Mogok Valley. Published in Gems & Gemology, 2003. Author(s): C.P. Smith, G. Bosshart, S. Graeser, H.A. Haenni, D. Guenther, K. Hametner, E. Guebelin
“Rainbow calsilica”
“Rainbow calsilica”. Published in GAHK Journal, 2003. Author(s): L. Kiefert
Der Stein des Regenbogens: “Rainbow Calsilica”
Der Stein des Regenbogens: “Rainbow Calsilica”. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft by Kiefert et al. in 2003. Author(s): L. Kiefert
Caesiumreiche Morganite aus Afghanistan und Madagaskar
Caesiumreiche Morganite aus Afghanistan und Madagaskar. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 2003. Author(s): H.A. Haenni, M.S. Krzemnicki
Caesium-rich morganite from Afghanistan and Madagascar
Caesium-rich morganite from Afghanistan and Madagascar. Published in Journal of Gemmology, 2003. Author(s): H.A. Haenni, M.S. Krzemnicki