The "Four Cs"—Cut, Color, Clarity, and Carat—form the GIA-established standard for evaluating diamond quality and value. Prioritizing cut is crucial for brilliance, while selecting G–J color and VS2/SI1 clarity offers the best value for an "eye-clean" appearance. For a detailed guide, visit Brilliant Earth .
4 Cs of Diamonds | Diamond Guide, Chart & Order of Importance four c's of buying a diamond