Glass mosaic bowl fragment late 1st century B.C.-early 1st century A.D. Roman Translucent honey brown, deep purple appearing black, and opaque white.Tall, outsplayed base ring, with convex curving side on interior and rounded bottom edge; irregular small circular indents on exterior.Ribbon mosaic pattern formed from lengths of one or more canes in a purple and brown ground with fine white threads, partially appearing yellow, in parallel lines, set between broad white bands.Polished exterior; pitting of surface bubbles and weathering in indents on exterior; creamy weathering and some iridescence on interior and jagged edges.This fragment is part of a flaring base ring, probably belonging to a deep ribbed bowl.. Glass mosaic bowl fragment. Roman. late 1st century B.C.-early 1st century A.D.. Glass; cast. Early Imperial. Glass