Ruby heat treatment and fracture repair
Ruby heat treatment and fracture repair. Published in Jewellery News Asia, 2001. Author(s): H.A. Haenni
Modern Doublets from Germany and India
Modern Doublets from Germany and India. Published in Journal of Gemmology, 2015, 34, 6, 479-481. Author(s): H.A. Haenni, U. Henn
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