1.75" is about the largest width that will fit onto most working type pants comfortably. Bluejeans, Carhartts, etc.

Check out L.A. Police gear, they're having a closeout on some very nice 5.11 tactical leather belts right now, around 8 or 9 bucks. If you ignore the word tactical in their name, they make some very nice stuff.

www.simplyrugged.com makes a very nice all leather belt too. Along with some very nice holsters.