Rubbed Bronze finish

I’ve looked far and wide, but I cannot find anything that remotely comes close to how I can create a “rubbed bronze” finish for a faucet-type product. Anybody know of any resources that could help me create multiple layers that would construe that type of aesthetic?

Have you tried using ‘dirty vertex colors’? I’ll see if I can find some documentation…one moment…
(edit) http://adaptivesamples.com/2013/08/07/commonly-ignored-feature-6-dirty-vertex-colours/