According to the GIA there are 10 grades of clarity and 25 grades of color. The first step is to decide what is most important to you. Besides clarity and color it is important to consider the cut of the diamond and it's size. Others are more concerned with the quality of diamond they are purchasing. With all the choices people have to choose from when selecting a diamond there are still some that are more common than others.
People also tend to request a one carat diamond more frequently than other weights.
These characteristics differ with every individual. The engagement ring is the emblem of a life long partnership between two people. It symbolizes strength and unity and is the ultimate seal on the promises made at marriage.