
How long have you had it?
It is only fairly recently that the Chinese glass is well finished on the base.
If you've had it some time, it might be inconsistent with the kind of glass coming from China at that time.
My guts have an uncontrollable habit of announcing "Beranek" when they see things with spiral twists in deep bases.
I'd be thinking Czech long before Murano, from the overall style and colours.
NB. I have spent my glass life ignoring Murano as much as I possibly could get away with. It's too big a field, there's too much to learn and far too much competition for the good stuff. It's difficult. It's much easier to pretend it's not really there.
