Martti Rytkönen (born 1960) studied both glass and ceramics at Konstfack in Stockholm, but glass captured his heart. He came to Orrefors on a scholarship and was hired in 1994. Pure, clear crystal is his imaginative medium of choice, one which he cuts, etches, sandblast and engraves to bring forth new graphical motifs and effects. He also works in coloured red glass, employing art glass techniques such as Graal, Ariel and Ravenna. His motifs are often narrative and full of humour. Matti has designed the Sigma and the Avenue series.