I know I will probably not get beyond "generic", but this one is a little different...
Diameter 24 cm, dark purple glass with some murrine in the center, and multicolour swirls and flecks over silver foil.
BTW, quite a nice effect on the dark glass, as the coloured flecks are not visible everywhere, but give the silver foil a rainbow sheen (see detail pic).
I found two others on the net, exactly the same decor but different shapes and background colours:
>> Link 1>> Link 2Mine has a label reading "Genuine Venetian - Murano - Made in Italy".
The shapes of all these three bowls remind more of Fratelli Toso pieces than of that unidentified maker which usually has the "Vetro Artistico Veneziano" label
>> Wayne shows several of their bowls on his site.
Or yet another maker?
Thanks for any comment,
Michael