Thanks Frank, the word 'aventurene' has helped my Google searching a bit. The frightening thing is that the only vases I can find that are remotely similar to this in any way are either 1950s Murano (I don't think so), Kamei Osaka (I don't think so either) or... wait for it, the 'Ann Primrose Collection' - no, really. That would be the 'Ann Primrose Collection' that puts 'Murano' stickers on glass made in China. So can the Chinese make stuff like this difficult? I like the sound of 'sophisticated and complex' but I'm not so keen on the Ann Primrose idea...