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1989

Les gemmes du groupes des béryls

Les gemmes du groupes des béryls. Published in Journal […]

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Authors

  • H.A. Haenni
Research Articles
Other Gemstones
1989

Iridescent natural glass from Mexico

Iridescent natural glass from Mexico. Published in Jour […]

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Authors

  • H.A. Haenni
Research Articles
Other Gemstones
1989

Edelsteine der Beryl-Gruppe

Edelsteine der Beryl-Gruppe. Published in Schweizerisch […]

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Authors

  • H.A. Haenni
Research Articles
Other Gemstones
1989

Irisierendes natürliches Glass aus Mexiko

Irisierendes natürliches Glass aus Mexiko. Published in […]

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Authors

  • H.A. Haenni
Research Articles
Other Gemstones
1989

Les feldspaths

Les feldspaths. Published in Revue A.F.G., 1989. Author […]

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Authors

  • H.A. Haenni
Research Articles
Other Gemstones
1988

Origin of the cat’s eye effect in heat-treated zircons from Sri Lanka

Origin of the cat’s eye effect in heat-treated zi […]

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Authors

  • H.A. Haenni
  • M. Weibel
Research Articles
Other GemstonesTreatments
1987

Grenats – une famille de gemmes multicolores

Grenats – une famille de gemmes multicolores. Pub […]

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Authors

  • H.A. Haenni
Research Articles
Other Gemstones
1987

Granate – eine farbenfrohe Edelstein-Familie

Granate – eine farbenfrohe Edelstein-Familie. Pub […]

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Authors

  • H.A. Haenni
Research Articles
Other Gemstones
1987

Garnets – a colourful gemstone family

Garnets – a colourful gemstone family. Published […]

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Authors

  • H.A. Haenni
Research Articles
Other Gemstones
1982

Untersuchungen an Titanit, einem für Sri Lanka neuen Edelstein

Untersuchungen an Titanit, einem für Sri Lanka neuen Ed […]

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Authors

  • H.A. Haenni
Research Articles
Other Gemstones

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