HFSE-enriched sapphires of gem quality: A combined FTIR and trace element study and implications for heat treatment detection
Michael S. Krzemnicki, Wei Zhou, Pierre Lefèvre, Markus Wälle, Hao Wang
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
Bertrandite in Emeralds
Over the past few years we have been seeing more and more lower quality stones in the lab. The reaso