Diamond Grading, Grades
When purchasing certified diamonds it is important to understand the diamond grading criteria used by the laboratories performing the certification.
Diamond grading covers numerous aspects of each individual diamond's qualities, but there are four grades which are critical to understand: cut, clarity, color, and carat weight. There are additional ratings and measurements noted on a diamond certificate, but they generally fall under the diamond's grade in one of the Four Cs. For example, measurements listed such as "depth" and "table" are part of the description of the diamond's cut.
You can learn more about how diamonds are graded by reading the articles listed below.