Thats the kind of shot necessary to get a better idea of what you have.
The base should have one center screw,which should be recessed and a different type of screw in general.That second screw is atypical.Is the base made of marble?I am used to seeing more "veins" in the stone itself.But given the 2 screws the base could be replaced also.
You do not mention any markings,which if there arent any is sadly not helpful either.From where I stand I find this piece very hard to judge either way,though I tend to dislike it.By any means it is not a "one looker". If you can return it to where you have it from I would do so,as this piece while decorative will always be causing discussion IMO.