Gold purity

18K Gold Price

Pure 24k gold is valued from the live spot price of $3,995.77 per troy ounce. Lower karats multiply that value by purity.

Karat	Purity	Per Gram	Per Troy Ounce
10K	41.67%	$53.53	$1,664.90
14K	58.33%	$74.94	$2,330.87
18K	75.00%	$96.35	$2,996.83
22K	91.67%	$117.76	$3,662.79
24K	100.00%	$128.47	$3,995.77

18K gold contains 75.00% gold by weight, so its melt value is $96.35 per gram before buyer discounts or refining costs.