Diamond jewelry is a significant purchase, but it's not one that needs to be scary. Know which options are most important to you. The 4 Cs of diamonds are: Cut, Clarity, Color and Carat Weight. Read here to discover diamond buying information that includes descriptions of the various diamond cuts, diamond clarity, and diamond color and carat weight. Here's a quick overview: CUT: Determines the stone's fire and brilliance and is probably your most important C. Not to be confused with a diamond's shape, cut refers to how a diamond's facets are created to maximize the amount of light that is absorbed, redirected, and released. Nature controls the other 3 Cs, but a diamond's cut is in the hands of the craftsman who shapes it. Read more about the four Cs at our Diamond Education section.