17. Nov IGC 2025 Gem zircon and sapphire age dating and application of origin determination: A study from New England sapphire fields, New South Wales, Australia Ahmadjan Abduryim, Frederick Lin Sutherland, Terry Coldham, Elena Belousova Download Pdf Age datingSapphire
17. Nov IGC 2025 Amber and its treatments: A New Baltic Amber Classification Chart This paper aims to present the history of the modification of Baltic amber (succinite), and particul Read More Elodie
17. Nov IGC 2025 Geographic Origin Determination of Natural Yellow Sapphires: The Preliminary Study Determining the geographic origin of yellow sapphires plays a critical role in the gem trade, as ori 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