ArtworkFragment of an Inlay Depicting a Theater MaskSign in to saveAncient Roman — Late 1st century BCE-early 1st century CE — Glass, mosaic glass techniqueArtwork · Art Institute of ChicagoGlass, mosaic glass techniqueArtistAncient RomanDateLate 1st century BCE-early 1st century CEMediumGlass, mosaic glass techniqueView at Art Institute of Chicago · Open Access