metallic

1. (of a sound) Harsh, as if coming from two metals striking one another.Examples: "No sooner had these syllables passed my lips, than—as if a shield of brass had indeed, at the moment, fallen heavily upon a floor of silver—I became aware of a distinct, hollow, metallic and clangorous, yet apparently muffled reverberation."

2. (of a color) Having the appearance of being of polished metal.