4Cs of Diamond Quality
Every diamond is one-of-a-kind, a miraculous product of time, location, and transformation. Each diamond possesses distinct characteristics that determine its value. The Gemological Institute of America (GIA) developed the initial, and now internationally recognized, standard for grading diamonds:
Color, Clarity, Cut and Carat Weight.
The GIA 4Cs of diamond quality offer essential guidance on how to select a diamond. This foundational knowledge not only demystifies a diamond's characteristics but also aids in comprehending its value and price.
- Diamond Color: For most diamonds, color actually refers to the lack of color. The less color a diamond has, the more sought-after and valuable it becomes. While some color variations may not be discernible to the naked eye, they significantly affect the stone's quality and price.
- Diamond Clarity: This aspect evaluates the presence, size, and position of internal 'inclusions' and external 'blemishes.' Clarity grades vary from 'Flawless,' indicating almost no imperfections, to 'Included,' which means the diamond has numerous imperfections.
- Diamond Cut: This doesn't pertain to the shape of the diamond but to the arrangement and proportions of its facets, as well as the craftsmanship quality. A diamond's brilliance, sparkle, and fire are all influenced by its cut. Cut grades range from 'Excellent' to 'Poor.'
- Diamond Carat: This term refers to the weight of the diamond. Generally, a higher carat weight corresponds to a higher price. However, two diamonds of the same carat weight can vary greatly in quality and price, depending on the other three Cs.
As creator of the Diamond 4Cs and the International Diamond Grading System™, GIA is not only a global authority, but the world’s trusted source for unbiased assessment.