
Filled emeralds: please face reality
Author(s) : -
Date : 1993
Filled emeralds: please face reality. Published in ICA Gazette, 1993.
Author(s): H.A. Haenni
Filled emeralds: please face reality. Published in ICA Gazette, 1993.
Author(s): H.A. Haenni
The emeralds of Fazenda Boa Esperanca, Taua, Ceara, Brazil: occurence and properties. Published in Journal of Gemmology, 1988.
Author(s): D. Schwarz, H.A. Haenni, F.L. Martins Jr, M. Fischer
Neues vom Smaragd-Vorkommen von Sta. Terezinha de Goais, Goais, Brasilien. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1983.
Author(s): H.A. Haenni , C.J. Kerez
Un gisement d’émeraudes à Madagascar. Published in Revue A.F.G., 1983.
Author(s): H.A. Haenni