How to Buy

There are four factors that determine the value of a diamond, collectively known as the four C's.

Cut
Cut determines a diamond's fire and brilliance. To make the most of this, the diamond cutter must place each of the stone's facets and angles in exact geometric relation to one another. A classic round brilliant-cut diamond has 58 precisely aligned facets.

Clarity
The fewer imperfections a diamond has, the greater its value. A high-quality diamond should be relatively free of blemishes, inclusions, clouds, feathers, chips and bruises.

Color
The purest and rarest diamonds are virtually colorless. Although many diamonds may appear colorless to the untrained eye, the majority contain very slight races of yellow, brown or gray. A stone's beauty and value usually increase dramatically the more colorless it is. The spectrum ranges from light yellow, "Z," to totally colorless, "D."

Carat
Carat is the gemologist's standard measure of a diamond's size and weight. Size alone is meaningless; you must consider cut, clarity and color. A large stone holds little value is it lacks fire, brilliance, purity and high-grade color. When investing in a diamond all critical qualities of the stone should be certified in writing.

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