Every diamond is a miracle of time, place and chance. Like snowflakes, no two diamonds are exactly alike. Until the middle of the twentieth century, there was no agreed-upon standard by which diamonds could be judged. The Gemological Institute of America (GIA) created the first, and now globally accepted standard for describing diamonds: Carat Weight, Color, Clarity and Cut. Today, the 4Cs of Diamond Quality is the universal method for assessing the quality of any diamond, anywhere in the world. Today's diamond buyer considers one more important factor, that of Diamond Shape.
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.