It is a silvery metal that easily turns black.
The door stood over ten metres high and was made of a silvery metal.
They leaped together, just as a wall of silvery metal passed directly above them.
Almost always the color is dark gray, or maybe silvery metal.
The whole thing is made of some silvery metal, maybe aluminium.
It settled to the floor, and the ball disappeared, but the silvery metal did not.
"That is made of a silvery metal, and all of one piece."
It is a soft silvery metal that tarnishes in air.
A short cylinder of silvery metal extended from its wrist.
And once it had been two strips of dull silvery metal unexpectedly heavy.