Jewelry Care Cloth. Cleans, Shines and Protects Gold, Silver and Platinum. Comes with printed instructions. Directions: Rub surface gently with inner treated (white) cloth to loosen tarnish. Buff surface with outer cloth (grey) to instantly obtain a brilliant shine. For heavily tarnished metal, lightly moisten the surface to be cleaned prior to polishing. Caution: Do not use on 24 karat gold, ivory, pearls