17. Nov IGC 2025 Gem-quality pink fluorite from Planggenstock, Switzerland: chemical and physical properties and a comparison with pink fluorites from other localities Michael F. Hügi, Michael S. Krzemnicki, Markus Wälle Download Pdf GemmologyGeochemistryOriginsOther Gemstones
17. Nov IGC 2025 Found, Lost, and Found Again: The Geological and Gemological Significance of the Salininha Emerald Deposit, Brazil The Salininha emerald deposit located in the municipality of Pilão Arcado, Bahia State, represents Read More Elodie
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 Pink-orange gem quality euclase from Bahia, Brazil Euclase, monoclinic crystal system—is a seldomly occurring mineral and with a Mohs hardness of 7 a Read More Elodie
