Age dating applied as a testing procedure to gemstones and biogenic materials (2019)
Author(s) : -
Date : 2019
Presentation by Dr. Michael S. Krzemnicki at IGC 2019 in Nantes, France.
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Tag : Emerald
News from the SSEF (2018)
Author(s) : -
Date : 2018
News from the SSEF Lab. 2018 Swiss Gemmological Society conference. Presentation by Dr. Michael Krzemnicki
Asterism in beryl, aquamarine and emerald- an update
Author(s) : -
Date : 2004
Asterism in beryl, aquamarine and emerald- an update. Published in Journal of Gemmology, 2004.
Author(s): K. Schmetzer, L. Kiefert, H.A. Haenni
Der Binntal Smaragd als Juwel
Author(s) : -
Date : 2003
Der Binntal Smaragd als Juwel. Published in Schweizer Strahler, 2003.
Author(s): M.S. Krzemnicki, G. Bosshart
Emerald treatments: their effects and how to recognize them
Author(s) : -
Date : 2001
Emerald treatments: their effects and how to recognize them. Published in 2001.
Author(s): L. Kiefert
The colour of Igmerald: I.G. Farbenindustrie flux-grown synthetic emerald
Author(s) : -
Date : 1998
The colour of Igmerald: I.G. Farbenindustrie flux-grown synthetic emerald. Published in Journal of Gemmology, 1998.
Author(s): K. Schmetzer, L. Kiefert
New fracture-filling materials have replaced oil
Author(s) : -
Date : 1992
New fracture-filling materials have replaced oil. Published in ICA Gazette, 1992.
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
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