Dear Blair, Ivo made me look at your beautiful tall glass which I'm afraid to say is not a hyacinth vase. It's far too tall for that, hyacinth vases are never taller than 8 inches and I think you have a Lily vase (see British homes and Antiques magazine August 2006). There are hyacinth vases a bit like this and they are only made in the UK from about 1900 till 1940 if that's any help. I can't tell you who made them, my glass knowledge doesn't go that far, Patricia