Ribbed mosaic glass bowl late 1st century B.C.-early 1st century A.D. Roman, probably Italian Translucent cobalt blue and purple, and opaque white.Outsplayed horizontal rim, with thick, uneven, rounded edge; convex curving side, tapering downwards.Composite mosaic pattern formed from polygonal sections of three canes: one in a blue ground with a white irregular square surrounding a central white dot; another in a blue ground with with white dots around a purple circle outlined in white with a central white dot; and one in a purple ground with an irregular pattern of white dots; on exterior, fourteen obliquely curving ribs extending from below rim to undercurve of side.Broken and repaired, with holes in rim and side, most of bottom, and all of base ring missing; dulling, pitting, and slight iridescent weathering.The bowl originally would have had a base ring similar to 17.194.262.. Ribbed mosaic glass bowl. Roman, probably Italian. late 1st century B.C.-early 1st century A.D.. Glass; ca