Sterling silver
The 925 stamp: at least 925 parts per thousand fine silver.
| Property | Value | Authority |
|---|---|---|
| Fineness | 925 parts per 1,000 [1] | § 23.5(b)(2) |
| US legal requirement | The words "Sterling Silver", "Sterling" or the abbreviation "Ster." may not be used unless the article is at least 925/1,000ths pure silver. [1] | § 23.5(b)(2) |
| Tarnishes | Yes [1] Silver sulfide tarnish is inherent to the alloy, not a defect. | § 23.5 |
Sources
- 16 CFR Part 23 — Guides for the Jewelry, Precious Metals, and Pewter Industries — U.S. Government Publishing Office (16 CFR Part 23)