Gave a it a shot, quick model actually, good exercise with nice results.

I did exactly as per Anis' and Michaels method except did each piece individually then Boolean union.
The main revolved glass cut outs, were Boolean diff with a surface that I mucked around with by manipulating the sweep curves until I got what I thought was ok. (History is my friend) :)
It might not be exact proportions I just eyed it off the screen, rendered in Hypershot.

Model attached if interested.







Cheers