Glass mosaic bowl fragment late 1st century B.C.-early 1st century A.D. Roman Translucent purple, opaque white, yellow, and brick red.Shallow convex curving side.Composite mosaic pattern formed from polygonal sections of three canes: one in a purple ground with a white circle and a central white rod; a second in a purple ground outlined in white and with a circle of yellow dots around a central white rod; a third in a purple ground with a circle of white rods surrounding a central red rod within a white circle.Polished exterior; pitting of surface bubbles on exterior; deep pitting and iridescent weathering on interior and jagged edges.. Glass mosaic bowl fragment. Roman. late 1st century B.C.-early 1st century A.D.. Glass; cast. Early Imperial. Glass