Rubine aus neuen Vorkommen in Madagaskar
Rubine aus neuen Vorkommen in Madagaskar. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 2001. Author(s): H.A. Haenni, C.C. Milisenda, U. Henn
Beobachtungen an hitzebehandeltem Rubin mit künstlicher Rissheilung
Beobachtungen an hitzebehandeltem Rubin mit künstlicher Rissheilung. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 2001. Author(s): H.A. Haenni
Diamants de type IIa et traitement HPHT: Identification
Diamants de type IIa et traitement HPHT: Identification. Published in Revue A.F.G., 2001. Author(s): J.-P. Chalain
A glass imitation of blue chalcedony
A glass imitation of blue chalcedony. Published in Journal of Gemmology, 2001. Author(s): H.A. Haenni, S. Tien Wu, Y. Xingqiang, T. Wen-Po
Oriented inclusions in spinel from Madagascar
Oriented inclusions in spinel from Madagascar. Published in Journal of Gemmology, 2000. Author(s): K. Schmetzer, E. Guebelin, H.-J. Bernhardt, 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
SSEF to identify GE POL diamonds
SSEF to identify GE POL diamonds. Published in 2000. Author(s): H.A. Haenni
Recognizing GE POL diamonds at SSEF
Recognizing GE POL diamonds at SSEF. Published in 2000. Author(s): H.A. Haenni
New spectral evidence for GE POL diamond detection
New spectral evidence for GE POL diamond detection. Published in Gems & Gemology, 2000. Author(s): H.A. Haenni, J.-P. Chalain, E. Fritsch
