Fineness
Fineness is the measure of precious metal purity expressed as parts per thousand. A gold bar with fineness .9999 contains 999.9 grams of pure gold per 1,000 grams.
Common Fineness Standards
| Fineness | Purity | Common Products |
|---|---|---|
| .9999 | 99.99% | Royal Canadian Mint Maples, PAMP Suisse bars |
| .999 | 99.9% | Most generic rounds and bars |
| .9167 | 91.67% (22K) | American Gold Eagles, Krugerrands |
| .900 | 90% | Pre-1965 US silver coins (junk silver) |
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