Roman Cast Glass Bowl with Blue and White Canes (100–1 BC), from Gaul region (now in modern France).
Mosaic glass vessels are among the most colorful ancient containers. They were formed by fusing numerous slices or ribbons (lengths) of cane in molds until they melted together into a swirl of colors, as seen on this blue and white bowl. Roman mosaic glass later inspired Venetian glassmakers to create millefiori (Italian for "thousand flowers").
The J. Paul Getty Museum