Ruby heat treatment and fracture repair
Ruby heat treatment and fracture repair. Published in Jewellery News Asia, 2001. Author(s): H.A. Haenni
New SSEF reports and myssef.ch platform for report verification and download
SSEF has revamped the design of their reports. Furthermore, owners of a SSEF report can now verify the authenticity of reports and also download PDF scans of their reports on the newly launched www.myssef.ch website. Reports issued after July 11th 2016 are available on this platform for download. Veri
Sapphire from Andranondambo, Madagascar
first published in Facette 22 (February 2016) In 2016, the SSEF received a sapphire of exceptional quality and size for testing (Figure 1). The sapphire of 33 ct was characterised by a saturated blue colour, – poetically also known as royal blue and a highly attractive velvety appearance due to submi
Species identification and treatment detection in dark coloured pearls
Species identification and treatment detection in dark coloured pearls. Published in 2015 Swiss Geoscience Meeting Abstract Proceedings, 134-135. Author(s): W. Zhou, T. Dzikowski
Spectroscopic study of Co-bearing spinel from Luc Yen (Vietnam)
Spectroscopic study of Co-bearing spinel from Luc Yen (Vietnam). Published in 2015 Swiss Geoscience Meeting Proceedings, 130. Author(s): C. Hanser
Origin of gem corundum in calcite marble: The Revelstoke occurrence in the Canadian Cordillera of British Columbia
Origin of gem corundum in calcite marble: The Revelstoke occurrence in the Canadian Cordillera of British Columbia. Published in 2015 Swiss Geoscience Meeting Proceedings, 126. Author(s) :T. DzikowskiJ. CempirekL.A. GroatG.M. DippleG. Giuliani
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
Nail-head Spicules as Inclusions in Chrysoberyl from Myanmar
Nail-head Spicules as Inclusions in Chrysoberyl from Myanmar. Published in Journal of Gemmology, 2015, 5, 434-438. Author(s): K. Schmetzer, M.S. Krzemnicki
Saguaro Stone, a New Ornamental Material from Arizona (USA)
Saguaro Stone, a New Ornamental Material from Arizona (USA). Published in Journal of Gemmology, 2015, 7, 567-569.
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