If you are currently in the market to purchase a diamond, or have been in the past, you may be familiar with the "4 Cs" most experts say are key when it comes to selecting a stone. The 4 Cs include: cut, carat, color and clarity.

What you may not know is the difference in the words "carat" and "karat." While the two sound the same and are similar in spelling, their meanings are not the same.

How Do You Know Which Word Is Correct?

The origin of both words dates back quite some time and is very interesting. Have you ever heard the term "carob," which refers to a common substitute for chocolate? Well, carob trees have reportedly grown in the Mediterranean region since ancient times and, surprisingly, carat and karat can both be traced back to the word carob.