The painter Diamantis Diamantopoulos was born in Magnesia, Asia Minor, in 1914 and passed away in Athens in 1995.
He studied at the Athens School of Fine Arts under Dimitrios Biskinis and Konstantinos Parthenis (1931–1936).
His characteristic style, which brings him close to Tsarouchis both stylistically and thematically, was formed after 1937 and was based on the processing of modernist features according to the dictates of Hellenocentrism. His works from 1936 onwards attested to his sensitivity toward the social and cultural environment. The early influences on his work came from Cubism, as developed by the School of Paris during the interwar period, and later from Fauvism in his use of color. After 1960, his idiom shifted toward the monumental, consisting of the reduction of anecdotal elements and a close focus on the human figure of labor in works with social themes.With long periods of absence and striking reappearances, he participated in solo and group exhibitions in Greece and abroad.
He took part in the International Exhibition of Plastic Arts in Belgrade (1977), the Inter-Balkan Exhibition in Bucharest (1977), the Venice Biennale (1982), and Europalia (1982), among others.
In 1978, a retrospective exhibition was organized at the National Gallery.