17. Nov IGC 2025 Spinel from Sri Lanka – An update Gamini Zoysa, Dietmar Schwarz, Arunas Kleismantas Download Pdf Other Gemstones
17. Nov IGC 2025 Gemological Characteristics of New Transparent Brown Sapphire A newly observed variety of faceted transparent brown sapphire has recently entered the gem market, Read More Laurent Cartier
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 Advancing Fei Cui Origin Authentication: A comparison of green fei cui from Myanmar, Guatemala, Italy and Russia In recent years, an increasing number of sources of fei cui, such as Guatemala, Italy and Russia, ha Read More Elodie
