Diamonds are graded by color, starting at D and moving through the alphabet to Z. Most diamonds appear white, but virtually all display barely perceptible tints of color. Evaluating a diamond's color for grading purposes is done by measuring the degree to which a diamond approaches colorlessness. Diamonds graded D, E and F are colorless and more expensive because they are more rare. However, well-cut diamonds with good clarity of all color grades can be equally dazzling, as it is the combination of all the 4 C's that determines each diamond's unique beauty.
Please review the GIA (Gemological Institute of America) color rating chart below:
To learn more about the 4 C's, click on the respective link below: