Glass mosaic ribbed bowl fragment late 1st century B.C.-early 1st century A.D. Roman Body fragment.Translucent honey brown, cobalt blue, and opaque white.Slightly outsplayed neck; straight side tapering downward and curving in at bottom.Ribbon mosaic pattern formed from sections of a single cane in brown ground with irregular wavy white and blue threads in parallel lines; on exterior, two broad vertical ribs, fairly widely spaced, with flattened tops and rounded outer edges.Polished interior; pitting of surface bubbles on interior; dulling and patches of creamy iridescent weathering on exterior; some weathering and chipping of jagged edges.. Glass mosaic ribbed bowl fragment. Roman. late 1st century B.C.-early 1st century A.D.. Glass; cast and tooled. Early Imperial. Glass