Age dating of natural pearls as a client service
The Swiss Gemmological Institute SSEF has become the first gem laboratory worldwide to introduce, as an additional service to clients, age dating of pearls using carbon-14 (14C). This scientific method can provide the pearl industry with new valuable information about the age of loose pearls and pearls in jewel
Sapphires from a New Deposit at Bemainty near Ambatondrazaka in Madagascar
Sapphires from a New Deposit at Bemainty near Ambatondrazaka in Madagascar. Published in Incolor, 2017, 35, 44-47. Author(s): M.S. Krzemnicki
Yellow danburite from Namalulu, Tanzania, and Myanmar: Origin of Colour and Its Stability
Yellow danburite from Namalulu, Tanzania, and Myanmar: Origin of Colour and Its Stability. Published in Journal of Gemmology, 35, 5, 384-386. Author(s): C.P. Smith, M.S. Krzemnicki
Yellow danburite from Namalulu, Tanzania: Gemmological properties and chemical composition
Yellow danburite from Namalulu, Tanzania: Gemmological properties and chemical composition. Published in Journal of Gemmology, 2017, 35, 5, 381-384. Author(s): C.P. Smith, M.S. Krzemnicki, H.A.O. Wang
Kosmochlor-bearing jadeite rocks from Kenterlau-Itmurundy (Lake Balkhash, Kazakhstan)
Kosmochlor-bearing jadeite rocks from Kenterlau-Itmurundy (Lake Balkhash, Kazakhstan). Published in IGC Namibia 2017 Abstract Proceedings, 154-155. Author(s) :L. Franz, M.S. Krzemnicki, K. Ernst, C. de Capitani, G.E. Harlow, N. Kouznetsov
New Sapphires from Ambatondrazaka, Madagascar
New Sapphires from Ambatondrazaka, Madagascar. Published in Journal of Gemmology, 2017, 35, 5, 391-392. Author(s): M.S. Krzemnicki
GemTOF: A new and highly versatile method to analyse trace elements and isotopes of gemstones and pearls
GemTOF: A new and highly versatile method to analyse trace elements and isotopes of gemstones and pearls. Published in IGC Namibia 2017 Abstract Proceedings, 88-90. Author(s): M.S. Krzemnicki, W.A. Balmer, H.A.O. Wang, J.-P. Chalain, P. Lefevre, W. Zhou, L.E. Cartier, H.A. Haenni
Radiocarbon Age Dating of 1,000-Year-Old Pearls from the Cirebon Shipwreck (Java, Indonesia)
Radiocarbon Age Dating of 1,000-Year-Old Pearls from the Cirebon Shipwreck (Java, Indonesia). Published in Journal of Gemmology, 2017, 35, 8, 728–736. Author(s): M.S. Krzemnicki, L.E. Cartier, I. Hajdas
Simultaneous X-ray Radiography, Phase-Contrast and Darkfield Imaging to Separate Natural from Cultured Pearls
Simultaneous X-ray Radiography, Phase-Contrast and Darkfield Imaging to Separate Natural from Cultured Pearls. Published in Journal of Gemmology, 2017, 35, 7, 628–638. Author(s): M.S. Krzemnicki, C. Hanser, V. Revol
Fake pearls made from Tridacna gigas shells
Fake pearls made from Tridacna gigas shells. Published in Journal of Gemmology, 2017, 35, 5, 424-429. Author(s): M.S. Krzemnicki, L.E. Cartier