Here I go with nothing really to back this up.
For me, it has a whiff of Czech glass from the 1950's. It's hard to find information on that era though. The 'stuck together' arms of the basket style have been used by Emanuel Beranek as seen on page 67 of Modern Bohemian Glass, but of course that style has been used by other countries too. It's just the general attention to detail, the ribbed/vortexed appearance of the sides that make me think Czech, plus the unusual colouring.
Quite probably it's by another designer from a different country altogether, but that's my ten penneth worth. I think it looks pretty interesting, hope you find out more about it Anne.