This is the strangest piece of art glass I've ever owned. It is a HUGE optic glass vase in an art nouveau, carnival glass form, but with a strange modern "icicle" rim that look straight out of Iittala 1960s Tapio Wirkala or Timo Sarpaneva. In interior lighting situations the color is ice blue, but in natural sunlight the color is a vibrant purple (!), which makes me think that it is alexandrite glass. Any help would be appreciated.
Thanks,
Charles.