I had posted earlier in this thread that these were from Ikea. In that post I used the word "similar" but only because the only ones I saw were clear glass whereas there are pictures here of coloured glass ones. I remember when they were being sold off as end of line stuff at £1.99 or £2.99 complete with light stand. I bought a couple but really just for the light stands. Well aware that being retailed by Ikea doesn't however identify the maker.
Alastair