Identification of colourless HPHT treated diamonds (e.g. GE POL)
Identification of colourless HPHT treated diamonds (e.g. GE POL). Published in 2000. Author(s): J.-P. Chalain, E. Fritsch, H.A. Haenni
Detection of GE POL treated diamonds
Detection of GE POL treated diamonds. Published in 2000. Author(s): J.-P. Chalain, H.A. Haenni, E. Fritsch
Identification of filler substances in emeralds by infrared and Raman spectroscopy
Identification of filler substances in emeralds by infrared and Raman spectroscopy. Published in Journal of Gemmology, 1999. Author(s): H.A. Haenni
Mise à jour sur la détermination des substances de remplissage dans les emeraudes
Mise à jour sur la détermination des substances de remplissage dans les emeraudes. Published in Revue A.F.G., 1999. Author(s): J.-P. Chalain
Détection des diamants GE POL
Détection des diamants GE POL. Published in Revue A.F.G., 1999. Author(s): J.-P. Chalain, H.A. Haenni, E. Fritsch
Detection of GE POL diamonds: a first stage
Detection of GE POL diamonds: a first stage. Published in Revue A.F.G., 1999.
Short notes on some gemstone treatments
Short notes on some gemstone treatments. Published in GAHK Journal, 1998. Author(s): H.A. Haenni
Fracture filling in emeralds and its detection with laboratory methods
Fracture filling in emeralds and its detection with laboratory methods. Published in ICA Gazette, 1998. Author(s): H.A. Haenni
Détermination de substances de remplissage dans les émeraudes
Détermination de substances de remplissage dans les émeraudes. Published in Revue A.F.G., 1998. Author(s): J.-P. Chalain, H.A. Haenni, L. Kiefert
Raman microprobe fingerprints fillings
Raman microprobe fingerprints fillings. Published in Thailand Jewellery Review, 1996. Author(s): H.A. Haenni