regret not a clue as to origin I'm afraid, other than to say that mid C20 Czechoslovakian and perhaps Italian sources might be a vague possibility.
Gilding, in many guises, was a fairly common form of decoration, certainly from eastern Europe - it's seen often on water jugs etc. - applied thinly and generally it wears poorly if the piece is used. This example may well be a tourist purchase, and date wise it's likely to come from somewhere in the second half of the C20 - evidence of wear on the underside of the base might help in this respect - but sometimes pieces live in cabinets and never pick up any wear.
There are many on-line sources which can be used to help id glass, though obviously we can't hope to find an image, on line, of everything ever made, and often end up not finding a match, which can be disappointing - but sometimes we have to live with disappointment. There's probably acres of glass that aren't on-line.
Regardless of whether you get an id, or not, the point about glass is to buy pieces you like and enjoy - this one looks decorative and this deep blue is attractive. There was a time when charity shops had some genuinely old and interesting pieces - now much of their glass is modern.
Just as a suggestion - there's no need, usually, to be quite so specific when providing details - folk here will need the height of course, but mostly that is sufficient and if they want more then they will ask. What is important is the quality of the pictures you post - these must be sharp, avoiding glare, and ideally provide good contrast. Avoid pictures with busy backgrounds - use a plain black, white or grey background (easiest in the form of a large sheet of thin card), and try to diffuse the light. Pictures showing the piece in full is important, and a good picture of the base is probably one of the more essential images - bottoms are important parts of glass.