X-ray Phase Contrast and X-ray Scattering Images of Pearls
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
Olivine – Peridot
Olivine – Peridot. Published in Journal of the Gemmological Association of Hong Kong GAHK, Vol. 35, 35-37. Author(s): 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
Alumosilicates: Andalusite, Kyanite, Sillimanite
Alumosilicates: Andalusite, Kyanite, Sillimanite. Published in Journal of Gemmological Association of Hong Kong GAHK, 2014, 34, 22-23. Author(s): H.A. Haenni
DNA Fingerprinting of Pearls to Determine their Origins
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
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
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
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
Chrysoberyl: a gem with many faces
Chrysoberyl: a gem with many faces. Published in GAHK Journal, 2010. Author(s): H.A. Haenni
Appearance of new bead material in cultured pearls
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