Although it is said that the mosaic was done by Cimabue, only the head of St. John was done by the artist in 1302, his last work, since he died in Pisa the same year.
Men det sägs att mosaiken gjordes av Cimabue, endast Johannes huvud gjordes av konstnären år 1302 vilket blev hans sista verk, då han dog i Pisa samma år.