As part of the Festival of Light in Recklinghausen, lasting from 19 September to 4 November 2018, Oskar Zieta together with his design studio prepared an exhibition in the space of Jerke Museum, joining this way the noble group of artists presented there, such as Władysław Strzemiński, Katarzyna Kobro and Wojciech Fangor. On this occasion, Oskar Zieta prepared a special artistic installation based on crystallic forms.