Synthetic Verneuil corundum with unusual color zoning
Author(s) : -
Date : 2004
Synthetic Verneuil corundum with unusual color zoning. Published in Gems & Gemology, 2004.
Author(s): L. Kiefert
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Research Library
To what an extent a jeweller can detect treated diamonds
Author(s) : -
Date : 2004
Tags : Diamonds / Treated Diamonds
To what an extent a jeweller can detect treated diamonds. Published in Le Diamant, rêve et réalité, 2004.
Author(s): H.A. Haenni
Pezzottaite, a new mineral and gem
Author(s) : -
Date : 2004
Pezzottaite, a new mineral and gem. Published in Journal of Gemmology, 2004.
Author(s): H.A. Haenni, M.S. Krzemnicki
Pezzottait – ein neues Mineral
Author(s) : -
Date : 2004
Pezzottait – ein neues Mineral. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 2004.
Author(s): H.A. Haenni, M.S. Krzemnicki
GemLIBS: a new analytical instrument to analyse beryllium in orange sapphires
Author(s) : -
Date : 2004
GemLIBS: a new analytical instrument to analyse beryllium in orange sapphires. Published in GAHK Journal, 2004.
Author(s): H.A. Haenni, M.S. Krzemnicki
Ein notwendiger Test in der Perlenuntersuchung
Author(s) : -
Date : 2004
Ein notwendiger Test in der Perlenuntersuchung. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 2004.
Author(s): H.A. Haenni
Der Diamant
Author(s) : -
Date : 2004
Der Diamant. Published in Rohm Zeit, 2004.
Author(s): H.A. Haenni
Are new sapphires from Sri Lanka diffusion-treated or not?
Author(s) : -
Date : 2004
Are new sapphires from Sri Lanka diffusion-treated or not? Published in Jewellery News Asia, 2004.
Author(s): H.A. Haenni
Spectroscopic properties of an historical greenish yellow diamond
Author(s) : -
Date : 2004
Tags : Diamonds / Spectroscopy
Spectroscopic properties of an historical greenish yellow diamond. Published in 2004.
Author(s): J.-P. Chalain, G. Bosshart, V. Hammer
Poudretteite: A rare gem species from the Mogok Valley
Author(s) : -
Date : 2003
Tags : Mogok / Poudretteite
Poudretteite: A rare gem species from the Mogok Valley. Published in Gems & Gemology, 2003.
Author(s): C.P. Smith, G. Bosshart, S. Graeser, H.A. Haenni, D. Guenther, K. Hametner, E. Guebelin