About the year 1351, Pietro Cavallini, a native of Rome and a supposed pupil of the painter Giotto, was commissioned to execute some mosaics in the Church of S. Maria Transtevere at Rome. The design and style of these works were strongly influenced if not partly copied from the frescoes of Giotto in the Arena Chapel at Padua.
Cavallini also executed in mosaic the celebrated Navicella, from the design by Giotto, which decorates the vestibule of the old basilica church of St. Peter’s at Rome. This work represents a ship in which the Apostles are seen, and Christ and Peter are figured walking on the sea.
With the exception of a few notable works in St. Peter’s at Rome, in St. Mark’s at Venice, some unfinished work of Domenico Ghirlandaio (1449-95), and the work of Pesselli in the Church of Or-San-Michele at Florence (1416), the fifteenth century was not a prosperous period for mosaic. This is accounted for by the rapid development of the Italian schools of painting, which advanced during this century with incredible swiftness, and as painting advanced, mosaic decoration retreated before its more popular rival. The mosaicist had to make room for the fresco painter, who soon became the successful competitor of the former in the work of church decoration.
Regarding the mosaics of St. Mark’s at Venice, it may be stated that they date from the eleventh century to the nineteenth.
The interior of this church is richly decorated on the vaults and upper parts of the walls with mosaics on grounds of gold, the other parts are covered with various rich marbles, and the floor is mosaic designed in the Byzantine style. In the twelfth century the principal apse, the cupola of the choir, and some of the chapels were decorated in mosaic. The great central cupola has mosaics of the eleventh century representing the Virtues, and twelfth-century work with the subjects of the “Virgin with Angels and Apostles,” the “Evangelists,” &c. To the same century belong the mosaics in the cupola of the choir, consisting of the figures of Christ, the Virgin, David and Solomon, and symbols of the Evangelists; the figure of St. Clement in the vault of the terminal chapel of St. Clement is ascribed to the twelfth century, and the mosaics of this chapel representing the life of the saint are thirteenth-century work.
The most important mosaic of the latter century in St. Mark’s is that which decorates the façade, the subject being “The Dedication of the Church.”
From the remains of the original mosaics which have not been remodelled by the restorers of later times, it has been seen that the work of the above centuries at St. Mark’s kept to the spirit and traditions of the Byzantine school. The work of restoration, however, has been so great in modern times that nearly all the mosaics belonging to a date prior to the sixteenth century have been executed afresh, so it can hardly be said there are any perfect or genuine Byzantine mosaics left.
Those of the sixteenth century in St. Mark’s are more like paintings in their general effect than monumental works for the decoration of the fabric. Pictorial effect and an appeal to the emotional faculties were aimed at by the artists and governing body of the church, rather than simplicity or a feeling for the decorative fitness of the material. The painters Titian, Pordenone, Tintoret, Paul Veronese, and the sculptor and architect Sansovino made designs for the mosaics, and their cartoons were interpreted by mosaicists, the principal of whom were Vicenzo and Domenico Bianchini, the brothers Zuccati, Bozza, Rizzo, Gaëtano, &c.
In this century, at Rome, in the cupola of the Chigi Chapel in S. Maria del Popolo, a celebrated mosaic was executed by the Venetian mosaicist Luigi da Pace, from a design by the great painter Raphael. It bears the date 1516, and has for its subject the Creation of the World. The Almighty is represented surrounded by seraphim, and in eight compartments are mythological figures representing the planets. Angel figures of great beauty are seated on the signs of the Zodiac, which occupy the lower parts of the mosaic.
During the seventeenth and eighteenth centuries the principal mosaics executed in Italy were those which decorate the Church of St. Peter’s at Rome. In these periods the Pontifical fabrique or studio for the production of the smalto and for the execution of the mosaics was in a state of activity. The fabrique had various locations in the vicinity of the church from the time of its establishment in 1528, and was finally set up in the Vatican in 1825 by Leo XIII. The most important period in the history of the Pontifical ateliers was during the early half of the eighteenth century, when it was under the direction of Pierre-Paul Cristofari, who was assisted in the production of the variously coloured material by the chemist Mattioli.