Star garnets and star garnet cat’s-eyes from Ambatondrazaka, Madagascar
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
Rosa bis rosa-orangefarbene Malaya-Granate aus Bekily, Madagaskar. Published in GZ, 2002. Author(s): K. Schmetzer, L. Kiefert, T. Hainschwang, H.-J. Bernhardt
Zuchtperlen vom Golf von Kalifornien, Mexiko
Zuchtperlen vom Golf von Kalifornien, Mexiko. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 2002. Author(s): L. Kiefert
Russian synthetic moissanite
Russian synthetic moissanite. Published in Geologica, 2002. Author(s): L. Kiefert, K. Schmetzer, H.A. Haenni
Synthetischer Moissanit aus Russland
Synthetischer Moissanit aus Russland. Published in GZ, 2001. Author(s): L. Kiefert, K. Schmetzer, H.A. Haenni
Synthetic moissanite from Russia
Synthetic moissanite from Russia. Published in Journal of Gemmology, 2001. Author(s): L. Kiefert, K. Schmetzer, H.A. Haenni
Raman spectroscopic applications in gemmology
Raman spectroscopic applications in gemmology. Published in 2001. Author(s): L. Kiefert, H.A. Haenni, T. Ostertag
Emerald treatments: their effects and how to recognize them
Emerald treatments: their effects and how to recognize them. Published in 2001. Author(s): L. Kiefert
Behandlungen von Smaragd
Behandlungen von Smaragd. Published in 2001. Author(s): L. Kiefert
Identification of gemstone treatments with Raman spectroscopy
Identification of gemstone treatments with Raman spectroscopy. Published in Proceedings of SPIE, 2000. Author(s): L. Kiefert, H.A. Haenni, J.-P. Chalain