4C’s Diamond Guide

A diamond’s beauty, rarity, and price depend on the interplay of all the 4C’s: cut, clarity, carat, and color. The 4C’s are used throughout the world to classify the rarity of diamonds. Come see the 4C’s for yourself at McCary’s!


Refers to the angles and proportions of a diamond. Cut also refers to shape: round, square, pear, or heart. A round diamond is the most brilliant of all diamond shapes.


Refers to the degree to which a diamond is colorless. Diamonds range in color from icy winter whites to warm summer whites.


Refers to the presence of flaws or “inclusions” in a diamond. An inclusion in the middle or top of a diamond could impact the dispersion of light, sometimes making the diamond less brilliant.


Carat is a measure of weight not size. Cut and mounting can make a diamond appear larger (or smaller) than its actual weight.

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