Quality factor of fancy color diamond-part-2

Cleaness

For colored diamonds, color is a key factor in determining their value. Even if diamonds have countless inclusions that reduce their clarity grade, they will still be sought after by connoisseurs if they can present an attractive color face up. Of course, the inclusions of the gem will endanger the sturdiness of the gem, thereby greatly reducing the value of the colored diamond. Colored diamonds may have colored twinning patterns, which are considered inclusions.

Cut

Cut size and shape are two aspects that affect the color of a diamond. The larger the diamond, or the deeper the pavilion, the longer the transmission distance of light in the diamond. In this way, the color will often be more intense and intense.

The cutting style also affects the color. Cutters have found that certain cutting styles (usually mixed cuts, such as Radiant) can enhance the yellow effect of diamonds, especially for diamonds with a color grade close to Z. Many yellow diamonds (known as "Cape" in the industry) have been carefully cut by Radiant, and they can be colored yellow when they face up. As color perception improves, the price per carat also increases. In addition, the Radiant cut has a higher degree of use of rough than the standard round brilliant cut.

Carat weight

Like diamonds in the general color range from D to Z, large colored diamonds are rarer and therefore more valuable than small ones.