This is so cute! An antique-looking holder with a candle that lights up! We'll call it pewter, but i doubt that is the metal.
See the photo of the tiny plug (and if you don't have a dollhouse wired for this standard mini plug, there is also a link below to a 9v Battery Converter for powering the chandelier via a battery).
This item is in Dollhouse 1:12 Scale.