Gold Purity

Carat:
Gold purity:

This chart shows some examples of the composition of various caratages of gold.

 CaratageGold(Au)Silver (Ag) Copper (Cu)Zinc (Zn)Palladium (Pd) 
Yellow Gold9k37.5%42.50%20%  
Yellow Gold10k41.70%52%6.30%  
Yellow Gold14k58.30%30%11.70%  
Yellow Gold18k75%15%10%  
Yellow Gold22k91.70%5%2%1.30% 
White Gold9k37.5%62.5%   
White Gold10k41.7%47.4% 0.9%10%
White Gold14k58.30%32.20%  9.50%
White Gold18k75%   25% (or Pt)
White Gold22kN/AN/AN/AN/AN/A
Rose Gold9k37.5%20%42.5%  
Rose Gold10k41.70%20%38.3%  
Rose Gold14k58.30%9.2%32.5%  
Rose Gold18k75%9.2%22.2%  
Rose Gold22k91.7% 8.40%