Here is my 2 cents worth...... I would start by saying it is actually a pretty vase....

Chinese glass.... they are getting very good..... One of the first clues to me is the fire polished rim and also the missing pontil scar on the base. Not always an indicator, but a start.....
The second clue is the missing Italian label, as products like these have been made in China and sold as Italian glass. I believe as a part of the huge scandal where the Italian government seized Chinese glass and Italian labels from importers in Italy who were misrepresenting the country of origin.
Lastly, I will attach an image of my piece which is similar in style, in that it mimics early Bohemian glass. I posted this example on CW quite a while ago and when I did I was directed to an almost identical example with the Italian label and the Chinese attribution. I can not remember what the label said on it, but absolutely no doubt of the provenance of the piece I looked at.
Fire polished rim and no pontil mark. Nicely irridized Silberiris style appliques on the sides. Took a chance when I bought a pair cheap online and got what I paid for.... and a good lesson about Chinese glass as it evolves.... :-) At least it was a rather cheap lesson.
Craig