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EducationMarch 30, 2026
Understanding the 4Cs of Diamond Quality
Cut, Color, Clarity, and Carat — the four factors that determine a diamond quality and value.
The 4Cs of Diamond Quality
Cut
The most important factor. Grades range from Excellent to Poor.
Color
Graded D (colorless) to Z (light yellow). D-F are colorless.
Clarity
Measures inclusions. Scale runs from FL (Flawless) to I3.
Carat
Diamond weight. One carat equals 0.2 grams.