Sterling silver, a popular alloy composed of 92.5% silver and 7.5% other metals (typically copper), is used in various jewelry items, including those sold by Zales. A common concern with sterling silver items is their propensity to develop a dark coating over time, known as tarnish. This surface discoloration is a chemical reaction between the silver and sulfur-containing compounds in the air or from direct contact with substances like lotions or certain foods.
The presence of tarnish does not diminish the intrinsic value of the silver. It is, however, considered an aesthetic issue that can detract from the jewelry’s appearance. Historically, tarnish was viewed as a sign of quality, indicating a higher silver content compared to alloys that resist tarnishing. Understanding the factors contributing to this oxidation process allows for preventative measures and effective cleaning methods, preserving the luster of silver possessions.
