Update on “chocolate” Tahitian cultured pearls
Update on “chocolate” Tahitian cultured pearls. Published in Gems & Gemology, 2006. Author(s): H.A. Haenni
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.