Hi,
your vase doesn't strike me as being from Lux glass Austria. (But I wouldn't rule it out)
Pics against a plain neutral background might help

There is not much information I can give you on this company. They produced decorative glass in a organic Murano / Czech style, I would guess from the 1950s well into the 1980s.
Most of the designs I have seen come in clear glass with a streak of one additional colour (typically rusty-red, but also dark blue and green), I have also seen single-coloured teal or green pieces. I have never seen a multicoloured piece...
Here in Austria loads of their stuff can be found at fleamarkets and charity shops, surprisingly almost all of them labeled, don't know why.
Michael