Origin determination for gemstones: possibilities, restrictions, reliability
Author(s) : -
Date : 1993
Origin determination for gemstones: possibilities, restrictions, reliability. Published in 1993.
Author(s): H.A. Haenni
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Tag : Origin Determination
Reliability of origin determinations for gemstones
Author(s) : -
Date : 1990
Tags : Burma / Colombia / Emerald / Gemmology / Kashmir / Origin Determination / Reliability / Research / Ruby / Sapphire / Sri Lanka
Reliability of origin determinations for gemstones. Published in Gemological Digest, 1990.
Author(s): H.A. Haenni
A contribution to the distinguishing characteristics of sapphires from Kashmir
Author(s) : -
Date : 1990
A contribution to the distinguishing characteristics of sapphires from Kashmir. Published in Journal of Gemmology, 1990.
Author(s): H.A. Haenni
Certitude de la détérmination d’origine
Author(s) : -
Date : 1989
Certitude de la détérmination d’origine. Published in Revue AFG, 1989.
Author(s): H.A. Haenni
The emeralds of Fazenda Boa Esperanca, Taua, Ceara, Brazil: occurence and properties
Author(s) : -
Date : 1988
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
The emeralds from the Belmont Mine, Minas Gerais, Brazil
Author(s) : -
Date : 1987
The emeralds from the Belmont Mine, Minas Gerais, Brazil. Published in Journal of Gemmology, 1987.
Author(s): H.A. Haenni, D. Schwarz, M. Fischer