Gemological Characteristics of New Transparent Brown Sapphire
Sutas Singbamroong, Tasnara Sripoonjan, Montira Seneewong Na Ayutthaya, Pukkapon Piantumdee, Tanyawit Sutipanya, Khaled Hussein and Nazar Ahmed
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