17. Nov IGC 2025 Pink to Red and Violet Diamonds from the Argyle Mine, Australia: Properties, Color Origin and Latest Research Results Thomas Hainschwang Download Pdf DiamondOrigins
17. Nov IGC 2025 Low Temperature Heat Treatment of Madagascar Sapphire One of the challenges facing gemologists today is the detec- tion of low temperature (below 1200°C) Read More Elodie
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 Morphologies and Surface Features of Diamond Samples from Southern Thailand In 1955, the first report on Thai diamond was made by Dr. Payome Aranyakanon, a renowned tin explora Read More Laurent Cartier