Sterling Silver
An alloy containing 92.5% pure silver and 7.5% other metals (typically copper), the global standard for silver jewelry.
Last updated: July 6, 2026
Detailed Explanation
Sterling silver is the most widely used silver alloy in jewelry manufacturing. Its composition of 92.5% silver and 7.5% copper (by mass) gives it superior hardness and durability compared to pure (fine) silver, which is too soft for most jewelry applications. The "925" hallmark stamped on sterling silver jewelry indicates this exact purity ratio. Sterling silver tarnishes over time due to a chemical reaction with sulfur compounds in the air, forming black silver sulfide (Ag₂S). Anti-tarnish treatments include rhodium plating, e-coating (electrophoretic coating), and anti-tarnish dips. Global annual demand for silver jewelry is approximately 200 million ounces (Silver Institute, 2024).
Common Uses
Rings, earrings, necklaces, bracelets, pendants, chains, and most commercial silver jewelry.
Advantages
Excellent workability for detailed designs, good strength-to-cost ratio, widely recognized and hallmarked.
Limitations
Tarnishes over time, softer than stainless steel or titanium, not suitable for heavy-duty applications.