17. Nov IGC 2025 Amber and its treatments: A New Baltic Amber Classification Chart Costanzo A., Klikowicz-Kosior A., Kosior M. Download Pdf Other Gemstones
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
17. Nov IGC 2025 Hessonite garnet from Angul district of Odisha, India This study describes hessonite (Fe-bearing variety of grossular garnet), found in the Birlamunda vil Read More Elodie
17. Nov IGC 2025 Pink to Red and Violet Diamonds from the Argyle Mine, Australia: Properties, Color Origin and Latest Research Results The Argyle Mine was by very far the largest producer of pink to red diamonds worldwide and the only Read More Laurent Cartier