Q&A – GRS forges solid path in gem treatment detection
Authors: Adolf Peretti Published in: Jewellery News Asia – January 2016 Download Publication
Authors: Adolf Peretti Published in: Jewellery News Asia – January 2016 Download Publication
Introduction In May 2015, the author (AP) was made aware that a company in Thailand (Tairus Co. LTD, Bangkok) had commissioned to a laboratory in Russia the production of new types of synthetic spinel of “lavender” colors by the method of crystal pulling from flux. This technique is the same used at the Institute of […]
Authors: Adolf Peretti, Willy Bieri, Matthias Alessandri, Andre Huber, Mario Meier Published in: Contributions to Gemology 11 Download Publication
Authors: Adolf Peretti, Detlef Günther, MTM Haris Published in: Contributions to Gemmology No. 11 Download Publication
Authors: Adolf Peretti, Ngwe Lin Tun, Thomas Armbruster Published in: Contributions to Gemmology No. 11 Download Publication
Authors: Adolf Peretti Published in: Jewellery News Asia – January 2014 Download Publication
Authors: Adolf Peretti Published in: Jewellery News Asia – October 2013 Download Publication
Authors: Adolf Peretti Published in: Jewellery News Asia – September 2013 Download Publication
Authors: Willy Bieri, Adolf Peretti, Bernard Grobety, Kathrin Hametner, Detlef Günther Published in: GRS Online Publication Download Publication
Authors: Adolf Peretti, Anong Kanpraphai Published in: Contributions to Gemmology No. 2 Download Publication