23. Oct IGC 2023 Colour change Paraiba tourmaline from Brazil By Claudio C. Milisenda, Stefan Müller Download Pdf Tourmaline
23. Oct IGC 2023 Fingerprint differences between Emeralds from two main zones of production in Colombia in response to input from their host rock Although there is information about techniques to separate Colombian emerald material from that of o Read More Elodie
23. Oct IGC 2023 Influence of Irradiation on Colour Modification and Colour Stability of Rubies: A Preliminary Study Ruby is the chromium-bearing red colour-variety of corundum Al2 O3 . Since historic times, ruby is h Read More Elodie
23. Oct IGC 2023 Blue shortwave luminescence of gems: the role of titanate groups The purpose of this study is to describe Blue Shortwave-UV excited Luminescence (BSL) in gems and re Read More Elodie
