Hiya Micha - welcome to the gmb
You've managed to post images that blow up nicely, but unfortunately, we can't really see what the glass looks like properly.
Could you please, take the images against a white background (just a sheet or 2 of A4), so we can see the colours and how they're worked.
Also, could you take clear images of exactly what the base looks like - we really like looking at bottoms, they can tell so much.
Rim shots are good too - how they're finished is also important.
One last thing, would you start a new thread for the candleholder thingy - it helps keep things clear here to give every bit of glass its own personal thread. You can put 4 images in each posting you make.
Having said all that, your glass does looks interesting - I'm very curious about it!