Sterling Silver
Also: 925 Silver, 925 Sterling, Silver 925
Sterling silver is a silver alloy containing 92.5 % fine silver (925/1000) – the standard for cutlery, jewellery, and many collectibles.
Sterling silver is the world's most widely used silver alloy for functional and decorative goods. It consists of 92.5 % fine silver and 7.5 % other metals – most commonly copper. This gives rise to the familiar hallmark 925, which indicates the fineness in parts per thousand.
Why Not Pure Silver?
Fine silver (999) is very soft and barely maintains its shape when used for cutlery, rings, or jugs. The addition of copper makes sterling silver harder and more durable without sacrificing its lustrous appearance. The trade-off: copper promotes tarnishing – the dark silver sulphide layer that forms when exposed to air and can be polished away.
The Silver Value of Sterling Silver
Only the fine silver content counts for material value. A 200-gram piece of sterling silver cutlery therefore contains 200 g × 0.925 = 185 g of fine silver. This portion is valued at the current silver price. For mixed lots – such as cutlery combining 800- and 925-grade pieces – the Melt Value Calculator handles the conversion; for individual silver holdings the Silver Calculator is the right tool.
Common Silver Finenesses
| Hallmark | Fine silver | Typical use |
|---|---|---|
| 999 | 99.9 % | Investment bars, coins |
| 925 | 92.5 % | Sterling silver: jewellery, cutlery |
| 835 | 83.5 % | Older cutlery (mainly Europe) |
| 800 | 80.0 % | Cutlery, everyday silverware |
Caution: Silver-Plated Is Not Silver
Many everyday items are merely silver-plated – they carry a microscopically thin silver layer over a base metal and are stamped with markings such as "90" or "100" (grams of silver coating per 24 parts). Their precious metal value is minimal. Sterling silver, by contrast, is solid throughout and bears the fineness hallmark 925.
Key Takeaway
Sterling silver (925) is the hardness compromise that makes silver suitable for everyday use. For valuation purposes, only the fine silver content of 92.5 % matters – multiplied by the weight and the current silver price, this gives the material value.