17. Nov IGC 2025 Automated Data Processing of Raman Spectra for Supporting Spinel Origin Determination Tasnara Sripoonjan, Montira Seneewong Na Ayutthaya, Sirinapa Saengdech, Sutas Singbamroong, Alongkot Fanka Download Pdf GemmologyOriginsSpinel
17. Nov IGC 2025 Low Temperature Heat Treatment of Madagascar Sapphire One of the challenges facing gemologists today is the detec- tion of low temperature (below 1200°C) Read More Elodie
17. Nov IGC 2025 History of Garnet Mining and Cutting in the Austro-Hungarian Monarchy Bohemian garnets, i.e., chromium-bearing pyropes, are found in several jewellery pieces from the Mig Read More Laurent Cartier
17. Nov IGC 2025 Study of “amethysts” from the French Crown Jewels Stefanos Karampelas, Eloïse Gaillou, Annabelle Herreweghe, Ugo Hennebois, Farida Maouche, Romain Bo Read More Laurent Cartier