Over the years I've accumulated a small collection of this kind of glass, but I'm really unsure as to the maker.
Here's a few pictures similarly decorated pieces I have: http://www.glasscollector.net/Mystery%20Glass/MysteryGlass.html
I've thought they could possibly be French or Moser, but have nothing to base that on other then a hunch.
The quality of the glass is quite nice, the range of colors I've seen is also very nice, as is the thick gold decor, and they always have nicely polished pontils (the powder box even has a star cut top, similar to star cut pontils seen on nicer Victorian cut glass).
Anyone have any ideas as to the maker?