17. Nov IGC 2025 Advancing Fei Cui Origin Authentication: A comparison of green fei cui from Myanmar, Guatemala, Italy and Russia Shang-I (Edward) Liu, Ka-Yi (Angela) Man, Montira Seneewong-Na-Ayutthaya, Bhuwadol Wanthanachaisaeng Download Pdf Jade
17. Nov IGC 2025 Gem-quality pink fluorite from Planggenstock, Switzerland: chemical and physical properties and a comparison with pink fluorites from other localities In this study, first results of trace element analyses and various spectrometric investigations on p Read More Laurent Cartier
17. Nov IGC 2025 Blue sapphire from Malacacheta of Minas Gerais, Brazil Malacacheta, located in Minas Gerais, Brazil, is renowned for its alexandrite deposits and com-plex Read More Laurent Cartier
17. Nov IGC 2025 Automated Data Processing of Raman Spectra for Supporting Spinel Origin Determination pinel is a highly valued gemstone, with its color and quality influenced by trace-element chemistry Read More Laurent Cartier