Early Byzantine fashion and textiles were derived from Roman fashion with togas, chitons and peploses being dominant clothing items. Wider trade relationships over time expanded Byzantium textile and decoration production and selections. For example, gold and silver thread (spun from gold or silver ore) added decorative detail to silk from Persia (until Byzantines began their own silk industry with smuggled silk worms). In addition, they had jewelry from the Black Sea areas and leather and furs from the northern barbarian peoples.