Thank you Ivo
I have similar pictures for the green vase but can't post pics from a modern book, it says the Frederick Carder ‘Pomona’ range was not marked - but books can be wrong - I am going to contact Steuben (although they probably won't get back - only Murano companies seem to reply to me LOL)
Thanks for the amethyst vase information, I agree with you about the shape and think it is a flower vase - I am sure there is a name for these vase shapes something like 'tulip' - mm can't remember off hand.
Thanks
Adam