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 HFSE-enriched sapphires of gem quality: A combined FTIR and trace element study and implications for heat treatment detection Gem-quality sapphires containing ‘exotic’ elements such as Sn, Nb, Zr, Ta, W, are of special int Read More Elodie
17. Nov IGC 2025 Morphologies and Surface Features of Diamond Samples from Southern Thailand In 1955, the first report on Thai diamond was made by Dr. Payome Aranyakanon, a renowned tin explora Read More Laurent Cartier
17. Nov IGC 2025 Modern Cultivation of Freshwater Pearls in China: Advances in Materials, Technique This presentation explores the modern advancements in freshwater pearl cultivation in China, focusin Read More Laurent Cartier