I think the reason I say venetian is the glass color.
The light colored ones are similar to the color used in gooseberries and the dark ones are green, very deep green .
I might be inclined to say India.
The glass is very heavy with very little presents of air bubbles.
I was told once that they are venetian but I'm just not sure.
This makes it hard to sell when you can't tell folks exactly what they are looking at
Thanks for helping out......Cpt. Longline