Dumbarton Oaks Research Library and Collection | Byzantine CollectionThe Dumbarton Oaks Byzantine Collection comprises more than twelve hundred objects from the fourth to the fifteenth centuries. Among the most important objects are treasures of gold, silver, and bronze vessels used for the celebration of the Eucharist. Other outstanding objects are late Roman and Byzantine jewelry, cloisonné enamels, glass and glyptics, ivory icons, and illuminated manuscripts. Although the collection focuses on Byzantine art, it comprises objects of Greek, Roman, and western Medieval art; works from the Ancient Near East; Pharaonic and Ptolemaic Egypt; and Islamic cultures. The collection also includes mosaics from Antioch and relief sculpture from the late Roman to Middle Byzantine periods, as well as more than two hundred textiles and comprehensive holdings of coins and seals.