After moving to Belgium, Simelovitz studied at the Ghent Academy, where he developed his technical skills and artistic voice. During the 1920s and 1930s he produced paintings and photographic works distinguished by vivid colors, dreamlike imagery, and poetic compositions. His art often balanced modernist experimentation with emotional sensitivity, reflecting both the influence of European avant-garde movements and his own personal imagination.

In addition to painting, Simelovitz worked as a photographer, further demonstrating his versatility as an artist. His visual language moved fluidly between realism and fantasy, frequently creating scenes infused with mystery, symbolism, and introspection. Although relatively little of his oeuvre survives, the remaining works testify to a distinctive and highly individual artistic talent.

The outbreak of the Second World War and the Nazi occupation of Belgium dramatically altered his life. As a Jewish artist, Simelovitz was arrested and deported to the The Holocaust transit camp in Mechelen, Belgium, one of the central deportation points for Jews being sent to concentration and extermination camps. Even while imprisoned, he continued to create art, producing poignant drawings and paintings that documented camp life and reflected both despair and resilience under unimaginable conditions.

In 1944, Simelovitz was deported from Mechelen and ultimately murdered during the Holocaust. His surviving works from both before and during the war now carry profound historical and emotional significance, standing as artistic testimony to a life interrupted by persecution and genocide.

Today, Kopel Simelovitz is remembered not only as a talented modernist artist, but also as an important cultural witness whose work preserves fragments of Jewish artistic life in pre-war Europe and the human experience of persecution during one of history’s darkest chapters.