hello Susan - welcome to the GMB. Not my sort of glass, at least not to collect, although I've owned a few of these richly coloured and heavily gilded pieces in years gone by.
My thoughts on these things was always that they originated in eastern Europe - Czechoslvakia mostly - where there was a substantial tourist industry producing water sets and similar shapes, generally from the period 1950 - 70, and this heavily gilded appearance was typical of that output. But no doubt other countries made them too.
Nothing is ever junk glass - there's always someone to love most things, although the fashion for this type of glass has probably now waned somewhat. Regret to say we don't discuss values on the GMB - we all have a different view on what is desirable or not, the consequence of which is that if you ask a dozen people what something is worth you'll probably get a dozen different opinions. You will possibly get an idea of values from on line auctions sites.
You sound very dogmatic about 'Venetian' - presume this is because a relative, or maybe yourself - has confirmed this was purchased from Italy.