When purchasing diamonds, there are some important elements to consider. Allow our experienced Jeweler Syracuse experts take you through this grand process. Although size is considered by some to be the most important attribute to look at when purchasing a diamond, there are actually four characteristics that define a diamonds worth. They are commonly referred to as the “Four C’s” and each “C” contributes a certain level of value and worth to the diamond. The Four C’s are Cut, Color, Clarity and Carat weight and they are all based upon rarity.