gold purity
Alloy content rating
Gold purity measures how much actual gold is in an alloy, expressed as karats or fineness.
Pure gold is 24 karat (24K) or .999 fine.
Common jewelry grades are 18K (75% gold), 14K (58.3%), and 10K (41.7%).
Higher purity means softer metal and deeper yellow color: The ring was stamped 14K to indicate its gold purity.
- 24 karatPurest gold measure
- karatGold purity unit
- finenessPurity or thinness measure
- assayCompositional evaluation procedure
- hallmarkingCertifying metal purity
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gold puritydebasement
Diminishing worth or purity
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gold purityfool's gold
Iron sulfide mineral
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