The 4Cs of Diamonds

Origins of the 4Cs

Every diamond is a miracle of time and place and chance. Like snowflakes, no two are exactly alike.

Until the middle of the twentieth century, there was no agreed-upon standard by which diamonds could be judged. GIA created the first, and now globally accepted standard for describing diamonds: Color, Clarity, Cut, and Carat Weight. Today, the 4Cs of Diamond Quality is the universal method for assessing the quality of any diamond, anywhere in the world.

The creation of the Diamond 4Cs meant two very important things: diamond quality could be communicated in a universal language, and diamond customers could now know exactly what they were about to purchase.

Color

The diamond color evaluation of most gem-quality diamonds is based on the absence of color. A chemically pure and...

Clarity

Natural diamonds are the result of carbon exposed to tremendous heat and pressure deep in the earth. This...

Cut

Natural diamonds are the result of carbon exposed to tremendous heat and pressure deep in the earth. This...

Carat Weight

Diamond carat weight is the measurement of how much a diamond weighs. A metric "carat" is defined as...