Manufacturer: Unknown
Do not know who the maker is, but reminds me of the Murano glass company except this dish is very delicate and most of Murano glass is very heavy. Wonderful colbalt blue glass base with all different colors and designs on the inside of the bowl. Bowl is 6 1/4" X 6 1/4" and 1" tall. It does have a black marking on the bottom, but can not make out what it is. In excellent shape.