Diamond Grading

Understanding Diamond Grading

A diamond's value is determined by the 4Cs - Cut, Color, Clarity and Carat weight. Diamonds are graded on objective scales for each of the 4Cs to evaluate quality.

Cut refers to a diamond's proportions, symmetry and polish. Well-cut diamonds reflect light better to maximize brilliance and fire. Grades range from Excellent to Poor.

Color grades the absence of color in a white diamond. Colorless diamonds are the rarest and most desirable. Grades start at D (colorless) and run through Z (light yellow/brown).

Clarity grades the number and size of inclusions inside the diamond. Flawless diamonds have no inclusions while Included diamonds have obvious flaws. In between are grades like VVS, VS and SI.

Carat measures diamond weight. One carat equals 0.2 grams. Because carat weight increases exponentially, a 1 carat diamond costs more than twice a 0.5 carat stone.

Each of the 4Cs impacts diamond quality and price. Low clarity or color may be less visible in smaller diamonds. Balance the 4Cs based on your budget and preferences when selecting a diamond. Work with a reputable jeweler to get an accurate assessment. Quality grading reveals the true beauty and value within every diamond.

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