
Cut
Cut is the most important of the four. It determines how a diamond returns light: its brightness, its fire, and its sparkle. A well-cut stone can look larger and whiter than its grades suggest, while a poorly cut one can look dull at any size.
Color
Color is graded from D, entirely colorless, to Z, which carries a visible warmth. The difference between neighboring grades is rarely visible to the eye, and the right choice often depends on the metal. A near-colorless stone can look perfectly white set in yellow gold.
Clarity
Clarity measures the small natural characteristics found within and on the surface of a diamond. Most are invisible without magnification. What matters is that a stone is eye clean, with nothing to distract from its brilliance when it is worn.
Carat
Carat is a measure of weight, not size. Two diamonds of the same weight can look quite different depending on how they are cut, which is why we consider how a stone faces up, not only what it weighs.


