Sterling is the jewelry quality standard in the United States and most world markets. It is an alloy of 92.5% argento. The remaining 7.5% is usually copper though it is sometimes other metals such as nickel. The other metals in the alloy increase hardness so the material will be more durable. Alloy additions also create the color and luster that is so prized by consumers. Sterling silver is the silver color we are most familiar with and the most common type of silver in US jewelry stores. It is very bright and shiny but it will tarnish. Tarnish is easy to clean with readily available polishing products. Sterling silver is harder than fine silver but it is still soft compared to other metals. Fine sterling silver chain and thin metals can be stretched or “drawn” under tension. And jewelry will be scratched or dented if it is banged around. Sterling can be soldered, formed and annealed repeatedly. The most common quality stamps are .925 and Stg. Halstead is a market leader in sterling silver jewelry supplies.