While beautiful in their own right, the Asscher and Emerald cuts are not well known for their brilliance. Due to their design and facet pattern, diamonds in these shapes are generally not as bright and sparkling as those with a brilliant cut based shape.
However, these shapes are valued for their clarity and luster. Well cut and with a high degree of purity, a high quality Asscher or Emerald cut diamond can have a unique and elegant appearance.
In general, diamonds with a large number of facets such as those listed above will shine more than diamonds with fewer facets.
However, the shape of a diamond is only one of the many factors that can determine the strength with which it shines. Other factors, such as the quality of the cut, the ratio of length to width, and the ratio of depth to table, affect a diamond’s brilliance, focus, and overall ability to shine.
Cut quality has the greatest impact on a diamond’s brilliance and fire. Simply put, a well cut diamond will reflect much more light than a poorly cut one, resulting in a much stronger and more visible sparkle. For a round brilliant cut diamond, limit your selection to “Excellent” (if the diamond is rated by GIA) or “Ideal” (if it is rated by AGS). These cut grades ensure that the diamond has the right proportions for optimum brilliance and fire. If you are considering a fancy shape diamond, we recommend that you use the length / width ratio and depth / table ratio guidelines in our diamond shape guide to avoid buying a diamond that does not reflect light well.