Cosmatesque

Cosmatesque, or Cosmati, is a style of geometric decorative inlay stonework typical of the architecture of Medieval Italy, and especially of Rome and its surroundings, and derived from that of the Byzantine Empire. It was used most extensively for the decoration of church floors, but was also used to decorate church walls, pulpits, and bishop's thrones. The name derives from the Cosmati, the leading family workshop of marble craftsmen in Rome who created such geometrical decorations. The style spread across Europe, where it was used in the most prestigious churches; the high altar of Westminster Abbey, for example, is decorated with a Cosmatesque marble floor.

The Cosmatesque style takes its name from the family of the Cosmati, which flourished in Rome during the twelfth and thirteenth centuries and practiced the art of mosaic. The Cosmati work has this peculiarity, that it is a glass mosaic used in combination with marble. At times it is inlaid on the white marble architraves of doors, on the friezes of cloisters, the flutings of columns, and on sepulchral monuments. Again, it frames panels, of porphyry or other marbles, on pulpits, episcopal chairs, screens, etc., or is itself used as a panel. The color is brilliant — gold tesserae being freely used. While more frequent in Rome than elsewhere, its use is not confined to that city. Among other places it is found in the Cappella Palatina in Palermo. Just what its connection may be with the southern art of Sicily has yet to be determined.

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