Vases

I am getting married in March 04 and i quite like the idea of having flowes in vases on the tables. The idea is to have 2 white roses and some limonium (sorry if that is incorrect spelling) which would tie in nicely with my flowers etc. The only probs i am having is buying the vases i want. Basially i want a very smallish vase which has a square base. Does anyone know of any website or anything that i could have a look on.

Thanks in advance for your help