Аннотация:On August 10, 2020, the world-famous mineralogist, Doctor of Geological and Mineralogical Sciences (1962), Professor (1986), Corresponding Member of the USSR Academy of Sciences (1988), Chief Research Fellow of the Department of Mineralogy of the Faculty of Geology and Scientific Director of the Moscow State Gemological Center passed away. MV University Lomonosova Arnold Sergeevich Marfunin.