Hi Connie, thanks for the welcome.
Thanks also for the suggestions, I've had a look at the Duncan glass site and have found two vases with covers that have a similar looking tripod base but the photos aren't great and the vases are at the rear of the picture so it's hard to tell. http://www.duncan-glass.com
Photo in the gallery section under Unique Duncan.
I had always assumed that it was victorian English glass because of the colour of the glass and the style of the inlay, any further information you may come across when you return home would be greatly appreciated.