Glass mosaic bowl fragment late 1st century B.C.-early 1st century A.D. Roman Rim fragment.Translucent blue and purple, opaque yellow and white, with colorless glass.Vertical, rounded rim; convex curving side, tapering downward. Striped mosaic pattern, formed from sections of two canes in a regular pattern: one in yellow spirally twisted threads flanked by bands of yellow, the other in a band of blue backed by white outlined by purple and white.Pinprick bubbles; exterior polished, with pitting of surface bubbles; creamy weathering and iridescence on interior and jagged edges; one edge ground flat.. Glass mosaic bowl fragment. Roman. late 1st century B.C.-early 1st century A.D.. Glass; cast. Early Imperial. Glass