How much your gold is worth depends on several things. One of the factors is how pure the gold is, which is described by how many karats it is. Although the words sound alike, a gold karat is different than a diamond carat. Instead of measuring weight like a diamond carat, a gold karat measures purity. Usually gold jewelry is marked with the karat number, such as 10kt or 18kt. Pure gold, which is 24 kt, is rarely used for jewelry because it is too soft; other metals must be mixed in for practical reasons. Another factor is how much the gold weighs, since it is priced by the ounce. And a third factor is the current market value of gold in the world market. This can vary from day to day, although fluctuations are usually gradual. Since market price affects what we are able to make from reselling the gold, it affects what we are able to pay you when we buy your gold.