What percent gold is 18 karat gold jewelry?

In the context of gold purity, karats are a measurement of the proportion of gold in an alloy. Pure gold is designated as 24 karats, which means it contains 100% gold. The karat value of gold jewelry indicates how much of the metal is actually gold versus other metals that may be mixed in for strength or color.

When considering 18 karat gold, you can determine the gold content by using the formula:

Gold content (%) = (Karat value / 24) × 100

For 18 karat gold, the calculation would be:

(18 / 24) × 100 = 75%

This indicates that 18 karat gold contains 75% gold content, thereby making it a popular choice for jewelry that strikes a balance between quality and durability. The remaining 25% consists of other metals such as copper, silver, or nickel, which enhance the overall properties of the gold alloy used in jewelry.