Yes, silver can discolor. This discoloration process is called oxidation, which is a natural process for silver. Oxidation is a chemical reaction that takes place when silver comes into contact with, for example, air or hands. This will make the silver black or milky in color. To preserve the appearance of silver as much as possible, we recommend that you do not touch the precious metal with your bare hands and store it in a dry, dark and safe place. A discoloration does not affect the value of Silver Coins or Silver bars.