Cleaning house

Today I'm expecting company. My step-mother, sister and her two little ones are coming for a visit. So, I should be cleaning. But, as I often do, I've found myself stuck on a small insignificant project instead of the home as a whole. I don't feel like doing the laundry or dusting, but what I will spend huge amounts of time doing is trying to remove the rust from this lamp the Husband and I purchased eons ago in Morocco. Unfortunately, all my hard work has had little effect. So, I'm hoping someone who reads here will have some advice. I have no idea what the metal is (it is silver in color). I've tried Brasso and didn't get very far with it. Anyone? Advice? I would really love to have this thing cleaned up.