The number of Karats in your gold jewelry indicates the number of parts that are Pure Gold vs. other metals, out of 24.
Pure gold or 100 percent gold is known as 24 Karat Gold – this means all 24 parts are pure gold, having no traces of any other metals. Pure or 24 Karat Gold is rarely used in jewelry because it is too soft.
The higher the karat, the higher the percentage of gold, and the more rich in color your jewelry will be.
24 Karat Gold = 100% Pure Gold
Therefore, 1 Karat = 4.167% Pure Gold
18K = (4.167 x 18) = 75% Pure Gold
14K = (4.167 x 14) = 58.33% Pure Gold
10K = (4.167 x 10) = 41.67% Pure Gold