Zvest Apollonio was born in Bertoki near Koper. He studied painting under Professors Božidar Jakac, Riko Debenjak, Marij Pregelj and Gabrijel Stupica at the Academy of Fine Arts in Ljubljana. He graduated in 1960. He continued his studies with a specialization in graphics under Professor Gabrijel Stupica, and completed it in 1964.
He won the Prešeren Fund Award for his paintings and graphic work in 1972.