Historic Emeralds and their Geographic Origin: A Retrospective Study
Marie-Laure Cassius-Duranton, Vincent Pardieu, Stefanos Karampelas
Nitrogen aggregates in yellow HPHT and CVD synthetic diamonds
Yuri Shelementyev, Galina Kriulina, Olga Yarapova, Viktor Vins, and Alexander Stolyarevich
Automated Data Processing of Raman Spectra for Supporting Spinel Origin Determination
pinel is a highly valued gemstone, with its color and quality influenced by trace-element chemistry