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 The Importance and Methodology of Undertaking a Literature Search for Gemmological Research and Article Publishing Performing a literature search is a very important—but often neglected—part of doing gemmologica Read More Elodie
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
17. Nov IGC 2025 Application of Fibre Optics Reflectance Spectroscopy (FORS) for the determination of mineral pigments in jasper The identification of pigments is carried out routinely mostly by X-ray diffraction, FTIR and Raman Read More Laurent Cartier