Paraiba or Not? Cu-bearing Tourmaline with a Distinct Fe Concentration
Author(s) : -
Date : 2022
Paraiba or Not? Cu-bearing Tourmaline with a Distinct Fe Concentration. Published in Journal of Gemmology, 2022, 38 (1), 20-22.
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Tag : Nomenclature
Colour varieties of gems: where to set the boundary
Author(s) : -
Date : 2020
Colour varieties of gems: where to set the boundary? Published in InColor, 2020 Winter, 45, 92-95.
A comparative study of Jadeite, Kosmochlor and Omphacite jades from Myanmar, and suggestions for a practical nomenclature
Author(s) : -
Date : 2014
A comparative study of Jadeite, Kosmochlor and Omphacite jades from Myanmar, and suggestions for a practical nomenclature. Published in the Journal of Gemmology, 2014, 34, 3, 210–229.
Author(s): L. Franz, T.T. Sun, H.A. Haenni, C. de Capitani, T. Thanasuthipitak, W. Atichat
A European gemmologist’s thoughts on jadeite jade
Author(s) : -
Date : 2007
A European gemmologist’s thoughts on jadeite jade. Published in GAHK Journal, 2007.
Author(s): H.A. Haenni
A short review of the use of ‘keshi’ as a term to describe pearls
Author(s) : -
Date : 2006
A short review of the use of ‘keshi’ as a term to describe pearls. Published in Journal of Gemmology, 2006.
Author(s): H.A. Haenni
Réglementation du commerce des gemmes
Author(s) : -
Date : 2005
Les pierres précieuses de A à Z: Réglementation du commerce des gemmes. Published in revue de la Fédération de l’industrie horlogère suisse FH, 2005.
Author(s): J.-P. Chalain
Le diamant et sa réglementation
Author(s) : -
Date : 2005
Les pierres précieuses de A à Z: le diamant et sa réglementation. Published in revue de la Fédération de l’industrie horlogère suisse FH, 2005.
Author(s): J.-P. Chalain
Orange treated sapphire: towards finding a name for a new product
Author(s) : -
Date : 2002
Orange treated sapphire: towards finding a name for a new product. Published in GAHK Journal, 2002.
Author(s): H.A. Haenni
Blue-green emerald from Nigeria (a consideration of terminology)
Author(s) : -
Date : 1992
Blue-green emerald from Nigeria (a consideration of terminology). Published in Australian Gemmologist, 1992.
Author(s): H.A. Haenni
The case for blue-green emerald
Author(s) : -
Date : 1991
The case for blue-green emerald. Published in Jewellery News Asia, 1991.
Author(s): H.A. Haenni