17. Nov IGC 2025 Spinel from Sri Lanka – An update Most of the spinels are found in shades of red to purple. Colourless, green and cobalt bearing varie Read More Elodie
17. Nov IGC 2025 The Importance and Methodology of Undertaking a Literature Search for Gemmological Research and Article Publishing Performing a literature search is a very important—but often neglected—part of doing gemmologica Read More Elodie
17. Nov IGC 2025 Gems in Greece: Geology, mineralogy and crystallizing environment In the accretionary Hellenides Orogen, gems occur in various rock types of mainly four tectonometamo Read More Laurent Cartier
