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1993

Origin determination for gemstones: possibilities, restrictions, reliability

Origin determination for gemstones: possibilities, restrictions, reliability. Published in 1993. Author(s): H.A. Haenni

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Authors

  • H.A. Haenni
Research Articles
GemmologyOrigins
1990

Reliability of origin determinations for gemstones

Reliability of origin determinations for gemstones. Published in Gemological Digest, 1990. Author(s): H.A. Haenni

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Authors

  • H.A. Haenni
Research Articles
Origins
1990

Ein Beitrag zu den Erkennungsmerkmalen der Kaschmir-Saphire

Ein Beitrag zu den Erkennungsmerkmalen der Kaschmir-Saphire. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1990. Author(s): H.A. Haenni

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Authors

  • H.A. Haenni
Research Articles
OriginsSapphire
1990

A contribution to the distinguishing characteristics of sapphires from Kashmir

A contribution to the distinguishing characteristics of sapphires from Kashmir. Published in Journal of Gemmology, 1990. Author(s): H.A. Haenni

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Authors

  • H.A. Haenni
Research Articles
OriginsSapphire
1990

Einige gemmologische Aspekte bei ostafrikanischen Korunden

Einige gemmologische Aspekte bei ostafrikanischen Korunden. Published in GZ, 1990. Author(s): H.A. Haenni

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Authors

  • H.A. Haenni
Research Articles
OriginsRubySapphire
1989

Certitude de la détérmination d’origine

Certitude de la détérmination d’origine. Published in Revue AFG, 1989. Author(s): H.A. Haenni

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Authors

  • H.A. Haenni
Research Articles
Origins
1987

The emeralds from the Belmont Mine, Minas Gerais, Brazil

The emeralds from the Belmont Mine, Minas Gerais, Brazil. Published in Journal of Gemmology, 1987. Author(s): H.A. Haenni, D. Schwarz, M. Fischer

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Authors

  • D. Schwarz
  • H.A. Haenni
  • M. Fischer
Research Articles
EmeraldOrigins
1987

On corundums from Umba, Tanzania

On corundums from Umba, Tanzania. Published in Journal of Gemmology, 1987. Author(s): H.A. Haenni

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Authors

  • H.A. Haenni
Research Articles
OriginsSapphire
1987

Die Smaragde der Belmont-Mine bei Itabira, Minas Gerais, Brasilien: Vorkommen und Charakteristika

Die Smaragde der Belmont-Mine bei Itabira, Minas Gerais, Brasilien: Vorkommen und Charakteristika. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1987. Author(s): H.A. Haenni, D. Schwarz, M. Fischer

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Authors

  • D. Schwarz
  • H.A. Haenni
  • M. Fischer
Research Articles
EmeraldOrigins
1986

Korunde aus dem Umba-Tal, Tansania

Korunde aus dem Umba-Tal, Tansania. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1986. Author(s): H.A. Haenni

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Authors

  • H.A. Haenni
Research Articles
OriginsSapphire

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