The cut is one of the most important aspects of diamonds because it affects two things, shape and light. If it’s not perfectly shaped, it won’t look good. To get an aesthetically-beautiful shape, a diamond must be well-cut. It’s said that a great diamond is cut precisely to the point where you would be able to notice the shape even from a distance. Also, precisely-cut diamonds refract light from all the angles, making them shine the brightest. An improper cut would make the light leak and the diamond wouldn’t sparkle to the eye as it should. In short, the more colors of the VIBGYOR spectrum you are able to notice, the better the cut.