Italian glass is not my area, but I would doubt it.

It's got a couple of air bubbles in it, it's not any sort of "perfectly formed" paperweight, it's just a small, bread-and-butter gift shop thing.
The white blobby bits look Maltese, the form is consistent but the pontil scar is not. I'm not so sure about the swathe of deep blue, or the shade of blue used.
It could be from any number of small studios.
I do think it is Studio glass.
