[LYDIA PLEKHANOVA-LE SAVOUREUX] SET OF TWO PLATES/SAMPLES OF NEPHRITE AND RHODONITE, 1957

dedicated in Cyrillic to Lydia Plekhanova - Le Savoureux from the Leningrad Mining Institute (now the Plekhanov Saint Petersburg Mining Institute) and dated ‘19.X.57’ 9 x 5.9 cm (each) Lydia Plekhanova-Le Savoureux was the daughter of Georgy Valentinovich Plekhanov (1856–1918), a Russian revolutionary and Marxist theorist who founded the Social Democratic movement in Russia.