I believe a load of Polish masters have been working and teaching in China recently - the quality and finish of the glass is improving all the time.
I was impressed with these - you can look very deeply into them, and I really liked the aventurine sparkles inside - very peacock-y.
I resisted - I don't do pwts.
I don't get to too many places - sometimes all I can get
to see is what's coming out in charity shops and TKMaxx!