Zircon inclusions in unheated pink sapphires from Ilakaka, Madagascar: A Raman spectroscopic study. Published in IGC 2021 Online Proceedings, 21-23. https://www.igc-gemmology.org/igc-2021-online
Sapphires from a New Deposit at Bemainty near Ambatondrazaka in Madagascar. Published in Incolor, 2017, 35, 44-47.
Author(s): M.S. Krzemnicki
New Sapphires from Ambatondrazaka, Madagascar. Published in Journal of Gemmology, 2017, 35, 5, 391-392.
Author(s): M.S. Krzemnicki
Vanadium-bearing gem-quality tourmalines from Madagascar. Published in Journal of Gemmology, 2007.
Author(s): K. Schmetzer, H.-J. Bernhardt, C. Dunaigre, H.A. Haenni
The orientation and symmetry of light spots and asterism in rose quartz spheres from Madagascar. Published in Journal of Gemmology, 2006.
Author(s): K. Schmetzer, M.S. Krzemnicki
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. Published in Journal of Gemmology, 2003.
Author(s): H.A. Haenni, M.S. Krzemnicki
Star garnets and star garnet cat’s-eyes from Ambatondrazaka, Madagascar. Published in Journal of Gemmology, 2002.
Author(s): K. Schmetzer, H.-J. Bernhardt, L. Kiefert
Rosa bis rosa-orangefarbene Malaya-Granate aus Bekily, Madagaskar. Published in GZ, 2002.
Author(s): K. Schmetzer, L. Kiefert, T. Hainschwang, H.-J. Bernhardt
Oriented inclusions in spinel from Madagascar. Published in Journal of Gemmology, 2000.
Author(s): K. Schmetzer, E. Guebelin, H.-J. Bernhardt, L. Kiefert