The 4Cs

The quality of a diamond is defined by means of the C’s: Carat, Clarity, Color and Cut. These characteristics do not only determine the stone’s quality, they can also be very useful in identifying the diamond, since every diamond is unique.


Carat refers to the weight of a diamond. One carat equals 0.2 grams. A carat is further subdivided in 100 points. A stone of e.g. 1.50 carat thus means it is 1 carat and 50 points.


The clarity or purity of a diamond is determined by the number, size, brightness and location of the internal and external characteristics, important structure phenomena and transparency. Generally speaking, mainly the inclusions in the stone affect the clarity. Obviously, the fewer inclusions or structure phenomena the stone displays, the higher the quality of the diamond.


The intensity can vary from almost colorless, which is preferable, to decidedly yellow. The value of a white stone is higher than that of a yellowish stone.


Diamonds can have cut grades of Ideal, Very Good, Good, Fair, and Poor. The cut, or proportions and angles of a diamond determine how it reflects light. A diamond’s reflective properties are referred to as fire or brilliance. Too shallow a cut will let light escape through the sides of the diamond before it has a chance to reflect, making it appear watery or dull, while too deep a cut will allow light to be lost through the bottom of the diamond, making it appear dark, especially in the center.

What Is The Clarity Enhancement Process?

It is our proprietary process that takes a diamond with a visible imperfection and makes the imperfection invisible or much less visible to the naked eye. The imperfection remains in the diamond but it can no longer be seen. A more technical explanation would be the following:During the clarity enhancement process we insert a microscopic amount of material into the part of the diamond that contains a feather. This material has the same optical properties as the diamond itself. When light travels from one medium to another, it either changes its course or reflects in a different direction. When light attempts to pass through a non-enhanced diamond that has a feather, the light hits the feather and reflects off in any number of directions. That is why we see the feather, and the diamond doesn’t appear to be clean. With a Clarity Enhanced diamond, the light passes through the natural feather because the material used for the enhancement has the same optical characteristics as the diamond. The beam of light "thinks" it’s still travelling through the same material (diamond) and continues its original course.

Does Clarity Enhancement "Change" A Diamond In Any Way?

Absolutely Not. The Gemological Institute of America (G.I.A), after extensive research, has determined that normal wear and tear cannot harm the enhancement. Only if the diamond is exposed to high heat or strong acids and bases, the enhancement may be reversed. In the extremely rare case that a diamond should lose its enhancement without being exposed to high heat, Diamond Jewelry United will re-enhance the diamond at no charge. With each diamond sold, DJU provides an apprasial with characterisitics of the diamond which also is our lifetime guarantee.As a result, Diamond Jewelry United can offer you visually stunning diamonds for the price of 70 - 80% less then similar looking non-enhanced diamonds.