Finnur Jonsson was one of the pioneers of abstract art in Iceland and was the first to show such works there. He also made portraits of people and nature and traveled. He worked a lot on the social issues of visual artists, wrote in newspapers and got into debates about visual art, he also worked extensively in goldsmithing and teaching in addition to doing visual art. In 1985, Finnur and his wife Guðný Elíasdóttir donated 800 of Finn’s works to the Icelandic Art Museum, and it is one of the largest gifts of art to the museum. Finn died in 1993 at the age of almost 101.