The influence of pearl oyster farming on reef fish abundance and diversity in Ahe, French Polynesia
The influence of pearl oyster farming on reef fish abundance and diversity in Ahe, French Polynesia. Published in Marine Pollution Bulletin, 78, 43-50. Link to article Author(s):L.E. Cartier, K.E. Carpenter
SSEF introduces the Automated Spectral Diamond Inspection
The Swiss Gemmological Institute SSEF has developed the Automated Spectral Diamond Inspection (ASDI) – a device which can analyse very large quantities of melee diamonds at low cost. The development of the instrument is all the more important following concerns expressed by members of the global diamond indus
SSEF – ETH Zurich breakthrough: DNA fingerprinting and age dating of pearls
For the first time, a group of SSEF – ETH Zurich researchers has succeeded in isolating DNA from pearls and used their genetic material to identify the specific species of oyster that produced the pearl. In a parallel project, researchers used radiocarbon dating to analyze the age of pearls, opening up new av
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.
Natural and synthetic vanadium-bearing chrysoberyl
Natural and synthetic vanadium-bearing chrysoberyl. Published in Journal of Gemmology, 2013, 33, 7–8, 223-238. Author(s): K. Schmetzer, M.S. Krzemnicki, T. Hainschwang, H.-J. Bernhardt
The role of vanadium and titanium in natural and synthetic chrysoberyl and alexandrite – coloration, chatoyancy and asterism
The role of vanadium and titanium in natural and synthetic chrysoberyl and alexandrite – coloration, chatoyancy and asterism. Published in IGC 2013 Vietnam Abstract Proceedings, 84-87. Author(s): K. Schmetzer, M.S. Krzemnicki, T. Hainschwang, H.-J. Bernhardt
Colour change effects in gemstones: Causes and perception
Colour change effects in gemstones: Causes and perception. Published in IGC 2013 Vietnam Abstract Proceedings, 110-113. Author(s): M.S. Krzemnicki, W. Zhou, J. Maizlan
Some uncommon sapphire “imitations”: Blue Co-zirconia, kyanite and blue dumortierite
Some uncommon sapphire “imitations”: Blue Co-zirconia, kyanite and blue dumortierite. Published in Journal of the Gemmological Association of Hong Kong GAHK, 34, 62-64 Author(s): M.S. Krzemnicki
Pearl or gemstone? Galatea pearls: a ‘new’ pearl product from French Polynesia
Pearl or gemstone? Galatea pearls: a ‘new’ pearl product from French Polynesia. Published in IGC 2013 Vietnam Abstract Proceedings, 64-66. Author(s): L.E. Cartier, M.S. Krzemnicki, J. Rere