Sterling Silver Defined

Sterling silver is a metal alloy composed of 92.5% pure silver and 7.5% other metals (usually copper). It is the international standard for high-quality silver and is marked with the hallmark "925".

The term "sterling" has been used since the 12th century in England. The word may derive from "Easterling" — German silversmiths known for producing coins of reliable silver content.

Sterling Silver vs. Other Silver Types

TypePurityCommon UsesValue/Gram*

* Based on current spot price

How to Identify Sterling Silver

1. Look for Hallmarks

  • "925" — Most common worldwide
  • "STER" or "STERLING" — Common in the US
  • Lion passant — British hallmark for sterling
  • Eagle mark — French hallmark

2. Physical Tests

  • Magnet test — Silver is NOT magnetic. If a magnet sticks, it's not silver
  • Ice test — Silver conducts heat rapidly. Ice melts quickly on real silver
  • Ring test — Silver produces a clear, bell-like ring when tapped
  • Professional assay — A jeweler can test with acid or XRF for definitive results

Why Sterling Silver Tarnishes

The copper in sterling silver reacts with sulfur compounds in the air, creating silver sulfide — the dark patina known as tarnish. This is normal and can be easily removed with polishing.

Ways to prevent tarnish:

  • Store in airtight bags with anti-tarnish strips
  • Wear your silver regularly (body oils help prevent tarnish)
  • Avoid exposure to chemicals, perfumes, and sulfur-rich foods

Sterling Silver Value

Sterling silver is valued primarily by weight. The melt value is 92.5% of the current silver spot price per equivalent weight. Use our Sterling Silver Calculator to find the exact value of your sterling items.

However, many sterling silver items are worth more than their melt value due to craftsmanship, brand, age, or collectibility.

Common Uses of Sterling Silver

  • Jewelry — Rings, necklaces, bracelets, earrings
  • Flatware — Knives, forks, spoons, serving pieces
  • Hollowware — Bowls, candlesticks, tea sets, trays
  • Decorative items — Picture frames, mirrors, vases
  • Musical instruments — Flutes, trumpets, some parts