Syria, Egypt, and Anatolia were first the teachers and then the rivals of Constantinople (Istanbul). The fusion of antique and Eastern elements resulted in the Byzantine style, the great period of which dates from the 9th to the end of the 12th century. The extensive use of embossed work, with filigree, cabochon gems, and small plaques of enamel, may be seen in both the East and the West during the early Middle Ages. The most conspicuous examples of large Byzantine metalwork are bronze church doors inlaid with silver. Many objects are still preserved in various European treasuries, which were enriched by the spoils of the sack of Constantinople in 1204. Venice, in the Treasury of St. Mark’s, has an unrivalled series of Byzantine chalices, bookbindings, and other treasures of metalwork; but it is in Kiev, Moscow, and Leningrad that broadly representative series of all the categories of Byzantine artistic production may be found.

The art of bronze casting had been preserved in the Byzantine Empire. The first bronze doors to be made after the art had died out in Rome were those for Hagia Sophia at Constantinople, which bear the date 838; the panels, with monograms and other ornament damascened in silver, are framed in borders cast in relief and enriched with bosses and scrolls, the whole in an admirable style. Two sets of doors in St. Mark’s, Venice, of Greek workmanship and considerable but uncertain antiquity, are supposed by some to have been removed from St. Mark’s at Alexandria. Next in date among surviving doors of Byzantine workmanship is a series ordered by the Pantaleone family (about 1066–87) and destined for cities in southern Italy—Amalfi, Trani, Salerno, Canosa di Puglia, and Monte Sant’Angelo.

Middle Ages: Islām

Animals in the Sāsānian style—lions, dragons, sphinxes, peacocks, doves, cocks, and the like—were cast in bronze in three dimensions and served, like their ceramic counterparts, as basins, braziers, and so on. They were particularly sought after in the later Abbāsid, Fātimid, and Seljuq periods, and from Egypt they became prototypes of similar European forms. It was the Seljuqs, apparently, who introduced a round bronze mirror, the reverse of which shows in low relief two sphinxes face to face, surrounded by a twined pattern, or two friezes with the astrological symbols of the seven chief heavenly bodies (Sun, Moon, and the five nearest planets) and the 12 signs of the zodiac, surrounded by a band of script; this goes back ultimately to Chinese origins.

Early vessels, such as mugs, were ornamented with animals in low relief, but engraving quickly supplanted this. Under the later Seljuqs (particularly the Artuqid atabegs of Mosul) and the Mamlūks, engraving became almost the only form of decoration, but only to serve as a basis for the yet richer technique of inlaying, or damascening: small silver plates and wires, themselves delicately engraved, were hammered into the ribs and surfaces, which were hollowed out and undercut at the edges.

In place of this, in an Artuqid bowl in the provincial museum at Innsbruck the spaces are filled in with cellular enamel. This was a method of evading the prohibition of precious metals, just as gold lustre was in pottery. The ornament consisted of friezes and medallions in lattice work and arabesque work, the interstices being filled with figures of warriors, hunters, musicians, animals, and astrological symbols. These were superseded later by Mamlūk coats of arms and inscriptions. In the 15th century the technique was imported from Syria to Venice, where productions of the same kind, alla damaschina or all’azzimina, were made right into the 16th century by Islāmic masters and were in great demand. In the East the process is still common, but both technically and artistically it has decayed.

In the 15th century there was a renaissance of pure metal engraving, but the design—inscriptions and arabesques in the Tīmūrid and Ṣafavid styles—was not cut into the material but left free in the manner of a relief, the background being etched in black. Decoration was applied to bowls, basins, mugs, vases, mortars, braziers, warming pans, candlesticks, smoking utensils, inkstands, jewel cases, Qurʾān holders, and mosque lamps. These are generally in the simplest possible forms—spherical, cylindrical, prismatic; the subjects include motifs of vegetation and animal life, the former mainly in the necks and feet of vessels, the latter for handles and ears, feet, and sometimes small spouts.