Others have been heavily restored or replaced, not with true mosaics, but with reproductions in colored stone of drawings by such artists as Bellini, Mantegna, and Tintoretto.
The stone used for restoration involves 5 colors.
mnli hypothesis: The stone used for restoration involves 5 colors. premise: Others have been heavily restored or replaced, not with true mosaics, but with reproductions in colored stone of drawings by such artists as Bellini, Mantegna, and Tintoretto.