AnswersHow does silver get tarnished? Posted on October 9, 2017 by LavumoMi Facebook Twitter Pinterest LinkedInIt happens with exposure to air and certain chemicals. The silver atoms combine with oxygen to form a layer of silver oxide, which is what causes the discoloration. Facebook Twitter Pinterest LinkedInShare this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Like this:Like Loading...Related LavumoMi How to remove tarnish from silver?Is tarnished silver still considered genuine silver?