The most important step in choosing a diamond is reviewing the diamond certificate, referred to by diamond grading labs as a grading report. A grading report documents the characteristics of a diamond, like the four Cs. Before purchasing a diamond, review a copy of its grading report, this is your guarantee of quality for that diamond.

     This guide simplifies the four Cs of diamonds; cut, color, clarity, and carat weight, so you can select your diamond based on the same criteria jewelers use to grade them.