17. Nov IGC 2025 Historic Emeralds and their Geographic Origin: A Retrospective Study Marie-Laure Cassius-Duranton, Vincent Pardieu, Stefanos Karampelas Download Pdf EmeraldGemmologyOrigins
17. Nov IGC 2025 Spinel from Sri Lanka – An update Most of the spinels are found in shades of red to purple. Colourless, green and cobalt bearing varie Read More Elodie
17. Nov IGC 2025 Noble gas in corundum: interests in gemology Noble gases —elements of the last column of the periodic table—are chemically defined by their f Read More Elodie
17. Nov IGC 2025 Studying renowned fancy color diamonds in museum collections: the case of the Winston Red Museums are unique repositories of international treasures. They are also places of active research, Read More Elodie
