17. Nov IGC 2025 Low Temperature Heat Treatment of Madagascar Sapphire E. Billie Hughes and Rosey Perkins Download Pdf SapphireTreatments
17. Nov IGC 2025 Amber from the Thanbaya Gaing Coal Mine, Minbu Township, Magwe Region, Myanmar Amber was recently discovered by local coal miners at the Thanbaya Gaing Coal mine located 6.5 km no Read More Laurent Cartier
17. Nov IGC 2025 Identification of melee size synthetic coloured diamond for jewellery Synthesis methods to produce large and high-quality dia- mond for jewellery have been improved over Read More Laurent Cartier
17. Nov IGC 2025 Gems in Hellenistic and Roman Jewellery of Northern Greece: An investigation from the Collections of the Archaeological Museum of Thessaloniki, Greece This study presents the results of an interdisciplinary archaeogemological investigation focusing on Read More Laurent Cartier