News about treated brown cultured pearls
News about treated brown cultured pearls. Published in GAHK Journal, 2006. Author(s): H.A. Haenni
Study shows chocolate pearls are ‘stained’
Study shows chocolate pearls are ‘stained’. Published in Jewellery News Asia, 2006. Author(s): H.A. Haenni
A short review of the use of ‘keshi’ as a term to describe pearls
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
X-ray luminescence, a valuable test in pearl identification
X-ray luminescence, a valuable test in pearl identification. Published in Journal of Gemmology, 2005. Author(s): H.A. Haenni, L. Kiefert, P. Giese
Pearls from the lion’s paw scallop
Pearls from the lion’s paw scallop. Published in Journal of Gemmology, 2004. Author(s): K. Scarratt, H.A. Haenni
Ein notwendiger Test in der Perlenuntersuchung
Ein notwendiger Test in der Perlenuntersuchung. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 2004. Author(s): H.A. Haenni
Zuchtperlen vom Golf von Kalifornien, Mexiko
Zuchtperlen vom Golf von Kalifornien, Mexiko. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 2002. Author(s): L. Kiefert
Sur la formation de nacre et des perles
Sur la formation de nacre et des perles. Published in Revue A.F.G., 1999.
Über die Bildung von Perlmutter und Perle
Über die Bildung von Perlmutter und Perle. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1997. Author(s): H.A. Haenni