The round cut diamond is by far the most popular and chosen shape. About 90 percent of the engagement rings we sell have this cut. And that is of course not for nothing. For the past 100 years, diamond workers have used the most advanced techniques of light and mathematical calculation to achieve the best "fire" and "life" in a diamond. The well-known “brilliant cut” is the result of this. In addition, a brilliant cut diamond offers the most possibilities when it comes to a balance between cut shape, color and clarity, while still giving you the fire and life you want. To optimize the brilliance of a traditional round diamond, you should preferably choose a diamond with a cut quality of at least Good and preferably Very Good or even Excellent.