Cat, your tumbler does have the same basic shape, but the workmanship looks so much finer than that on mine...
I didn't pursue maker any further once I saw that this was probably a highball tumbler from a cruise line - they make them cheaply I would imagine since a lot of them end up like mine must have, smuggled into someone's luggage and taken away as a souvenir.
Yours is gorgous! Looks like a cathedral?