According to the [Getty museum](https://www.getty.edu/art/collection/object/10965Y): Mosaic cast glass bowl of dark blue (cobalt) and white (antimony and tin oxide ) rods placed together, cut into sections, then formed into a disc, fused and slumped over a form. Broken at some point in the past and rejoined.
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According to the [Getty museum](https://www.getty.edu/art/collection/object/10965Y): Mosaic cast glass bowl of dark blue (cobalt) and white (antimony and tin oxide ) rods placed together, cut into sections, then formed into a disc, fused and slumped over a form. Broken at some point in the past and rejoined.