X-ray Phase Contrast and X-ray Scattering Images of Pearls. Published in IGC 34 Lithuania Abstract Proceedings, 117-120. Author(s): M.S. Krzemnicki, V. Revol, C. Hanser, L.E. Cartier, H.A. Haenni
A comparative study of Jadeite, Kosmochlor and Omphacite jades from Myanmar, and suggestions for a practical nomenclature
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
Abstract: We report the first successful extraction of oyster DNA from a pearl and use it to identify the source oyster species for the three major pearl-producing oyster species Pinctada margaritifera, P. maxima and P. radiata. Both mitochondrial and nuclear gene fragments could be PCR-amplified and sequenced.
Tracing cultured pearls from farm to consumer: A review of potential methods and solutions. Published in Journal of Gemmology, 2013, 33, 7-8, 239-246. Author(s) :H.A. HaenniL.E. Cartier
Natural pearls and cultured pearls: A basic concept and its variations. Published in Australian Gemmologist, 2012. Author(s): H.A. Haenni
Ming pearls: A new type of cultured pearl from China. The Journal of the Gemmological Association of Hong Kong (2011) Author(s): H.A. Haenni
Abstract: A range of different materials has already been used as cores in beaded cultured pearls, and now two new alternative options, baroque shaped shell beads and Chinese freshwater cultured pearls, are being used. Experiments with beads of the latter, approximately 6.5 mm across, have been carried out with