Platinum - $34.53 USD / gram
Gold - $42.64 USD / gram
Palladium - $22.22 USD / gram
Silver - $0.60 USD / gram
Price USD per Troy Ounce
Precious Metals XML Price Feed
 
Metal Density Chart
Metal Type
Density (grams per cubic cm)
Platinum 999
21.50
Tungsten
19.60
Gold 24K
19.32
Tungsten Carbide
14.29
Palladium
12.16
Silver 999
10.49
Copper
8.96
Nickel
8.91
Cobalt
8.75
Iron
7.87
Manganese
7.35
Tin
7.26
Zinc
7.14
Titanium
4.51
Aluminum
2.71

Alloys

Colored Alloys of Gold (Karat weight will vary depending on the alloy content)
Color
Alloy Content By Weight
White Gold
90% Gold, 10% Nickel
Red Gold
75% Gold, 25% Copper
Rose Gold
75% Gold, 22.5% Copper, 2.5% Silver
Pink Gold
75% Gold, 20% Copper, 5% Silver
Spangold
76% Gold, 19% Copper, 5% Aluminum
Green Gold
75% Gold, 25% Silver
Black Gold
75% Gold, 25% Cobalt

Hallmarks and Stamps

Gold Alloys
Karat
Mixture Gold to Alloy
Gold Percentage
24 Karat
24 Parts Gold to 0 Parts Alloy
100%
22 Karat
22 Parts Gold to 2 Parts Alloy
91.6%
18 Karat
18 Parts Gold to 6 Parts Alloy
75%
14 Karat
14 Parts Gold to 10 Parts Alloy
58.3%
10 Karat
10 Parts Gold to 14 Parts Alloy
41.6%
9 Karat
9 Parts Gold to 15 Parts Alloy
37.5%
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