Hi and welcome.

Your glowing green is from Uranium. Nothing to worry about, it will stay in the glass and uranium radiation has very weak penetration.
It is still very difficult to make out details from your pics, the background gets in the way a bit and they are not focussed enough.
I would suspect it is from Murano, but don't know which factory.
What shape exactly, is the round base? Is it shaped a little like a flower?