silvery

lustrous gray; covered with or tinged with the color of silver

• “silvery hair”

resembling or reminiscent of silver

• “a soft silvern voice”
• “singing in her silvery tones”

having the white lustrous sheen of silver

• “a land of silver (or silvern) rivers where the salmon leap”
• “repeated scrubbings have given the wood a silvery sheen”