His favorite medium was oil on hardboard, canvas or paper, but he also used crayons, glue, paint and Siberian chalk. Sculpture, mosaics and reliefs in fire clay and terracotta by Jan van Gemert appeared in Gemert, 's-Hertogenbosch, Uden, Weert, Son (Liberation Monument, see image), Elsendorp (in front of the St. Christopher Church), Made, Drimmelen (Resistance monument), Wanroij, Bakel and Odiliapeel. His work is in public collections of the Kempenland Museum in Eindhoven. and the Museum De Wieger in Deurne.