The quality of the color of the diamond in the ring is the most important thing you need to consider while buying a fancy color diamond ring. The cut of fancy color diamond engagement rings is important too, because it plays a crucial role in determining the color of fancy diamonds. However, the cut of a fancy color diamond ring will not be able to maximize the light return and symmetry of the stone. The color of fancy color diamond engagement rings is actually graded based on three different factors, hue, saturation, and tone. The term saturation refers to how weak or strong the diamond is, while tone represents the darkness or relative lightness of the diamond’s color. Finally, the term, hue refers to the actual color of the diamond in a fancy color diamond ring.