According to the recognized color standards, the Color D is the whitest. Colors then proceed through the alphabet to the letter Z, which is a yellowish diamond. The whiter the diamond the more brilliance is passed through the stone. Since color is the most obvious of the 4 C's to observe, it is therefore easy to conclude that color is the most important component in choosing your diamond. . The clarity of the diamond refers to the amount of inclusion or flaws that are seen in the diamond by a trained gemologist with a 10x power loupe or microscope.
Inclusions are unique to each diamond.
It is the rare diamond that does not have flaws and those diamonds are usually very expensive. It is important that your diamond be free of inclusion to the naked eye. These diamonds will have clarity is S12 or better. Remember clarity is just one component of establishing a diamond price. The certificate that comes with the potential purchase will establish the official weight of your diamond.