Carat Weight

This is the weight of the diamond measured in carats. One carat is divided into 100 "points", so a diamond of 75 points weighs .75 carats. Carat-weight is the easiest of the 4C’s to determine. But two diamonds of equal weight can have very unequal value, depending on their cut, color and clarity.

Clarity

A rarity. To determine a diamond’s clarity it is viewed under 10-power magnification by a trained eye. Most diamonds contain very tiny natural birthmarks known as inclusions. The fewer and smaller the inclusions, the less likely it is to interfere with the passage of light through the diamond and the more beautiful the diamond will be.

Color

Good color is no color. Diamonds are found with a range of colors, from faint yellow or brown through to rare pinks, blues, greens and other colors known as fancies.

Cut

Many people confuse cut with the shape of a diamond. Diamonds are cut into a number of shapes, depending on the nature of the rough stone. When cut to good proportions, the diamond is better able to reflect light, creating more scintillation, more sparkle.