17. Nov IGC 2025 Challenges in the Detection of Ruby and Sapphire Treatment in the Thai Market Supparat Promwongnan, Wilawan Atichat, Cheewaporn Suphan, Wassana Chongraktrakul, and Visut Pisutha-Arnond Download Pdf RubySapphireTreatments
17. Nov IGC 2025 Amber and its treatments: A New Baltic Amber Classification Chart This paper aims to present the history of the modification of Baltic amber (succinite), and particul 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 Studying renowned fancy color diamonds in museum collections: the case of the Winston Red Museums are unique repositories of international treasures. They are also places of active research, Read More Elodie
