1 troy oz of Gold = 31.1035 grams.
Current "Spot Price" of Gold ($1507 a troy oz) divided by 31.1035 grams = $48.451138 a gram.
Multiply the Kt mark by 4.16 to calculate the percentage of gold in a given item.
10kt x 4.16 = 41.60%
14kt x 4.16 = 58.24%
18kt x 4.16 = 74.88%
22kt x 4.16 = 91.52%
24kt x 4.16 = 99.84%
Example: 5 grams of 14kt gold.
5 x .5824 = 2.912 grams of Gold.
2.912 gm of Gold x $48.451138 = $141.08971
Gold-fill is similar.
Here's an example with 44 grams of 1/20 12kt Gold-fill.
1/20 of the overall weight is 12kt gold.
44 gm divided by 20 = 2.2 grams of 12kt gold.
12kt x 4.16 = 49.92% Gold.
2.2 gm x .4992 = 1.09824 gm Gold.
1.09824 gm Gold x $48.451138 = $53.210977 worth of Gold in this batch of scrap.
Current "Spot Price" of Gold ($1507 a troy oz) divided by 31.1035 grams = $48.451138 a gram.
Multiply the Kt mark by 4.16 to calculate the percentage of gold in a given item.
10kt x 4.16 = 41.60%
14kt x 4.16 = 58.24%
18kt x 4.16 = 74.88%
22kt x 4.16 = 91.52%
24kt x 4.16 = 99.84%
Example: 5 grams of 14kt gold.
5 x .5824 = 2.912 grams of Gold.
2.912 gm of Gold x $48.451138 = $141.08971
Gold-fill is similar.
Here's an example with 44 grams of 1/20 12kt Gold-fill.
1/20 of the overall weight is 12kt gold.
44 gm divided by 20 = 2.2 grams of 12kt gold.
12kt x 4.16 = 49.92% Gold.
2.2 gm x .4992 = 1.09824 gm Gold.
1.09824 gm Gold x $48.451138 = $53.210977 worth of Gold in this batch of scrap.