23. Oct IGC 2023 Colour change Paraiba tourmaline from Brazil By Claudio C. Milisenda, Stefan Müller Download Pdf Tourmaline
23. Oct IGC 2023 A Review and Synthesis of the Geology and Gem Resources of Granitic Pegmatites in Southern California, USA Gem-bearing pegmatites in Southern California are hosted by the Peninsular Ranges batholith, and occ Read More Elodie
23. Oct IGC 2023 Phase transformations as important markers for heat treatment detection in corundum and other gemstones Detection of heat treatment of ruby and sapphire and other colour varieties of corundum is a major i 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
