The alteration of a silver ring’s surface to exhibit a copper-like hue typically indicates the presence of copper oxidation. Sterling silver, commonly used in jewelry, is an alloy primarily composed of silver but also includes a percentage of another metal, often copper, to increase durability. When the ring is exposed to environmental factors such as humidity, perspiration, or certain chemicals, the copper content within the alloy can react, leading to the formation of copper oxides on the surface. This oxidation process manifests as a reddish or copper-toned discoloration.
Understanding the causes of this surface change is important for maintaining the appearance and longevity of silver jewelry. The inclusion of copper in sterling silver significantly enhances its strength and resistance to deformation, making it suitable for everyday wear. While pure silver is highly tarnish-resistant, the presence of copper introduces susceptibility to oxidation. Historically, different metals have been alloyed with silver to improve its workability and durability, but this has also necessitated the development of cleaning and maintenance techniques to address potential discoloration.
