Round Cut Still Remains the Most Popular Diamond Shape

engagement ring

​Whether you are interested in buying an engagement ring, a set of gorgeous earrings, or perhaps a pendant, the brilliant round cut diamond remains the most common option for all types of diamond jewelry. This shape is often seen as the “default” option when it comes to buying diamonds. It has been around since the 1750s and offers a simple, yet sophisticated shape that provides you with a perfect level of sparkle, fire and, of course, brilliance. No matter what type of jewelry you wish to buy, if you are uncertain about the diamond shape that will go best with that jewelry, then the brilliant round cut will surely not disappoint you.

​The Brilliant Round Cut Diamond

round cut diamond ring

​The brilliant round cut diamond shape has evolved a lot during the past years. It was initially introduced to the world in 1750, but traces of this shape were found earlier as well. In modern times, the brilliant round cut has been modified to feature 58 facets or 57 facets. Different variations have also been created, with different lengths, crown heights, table sizes, culet sizes and, of course, total depth. This ensures that, even though the diamond shape is very common, there are different variations of the shape available to ensure every person has something a little unique to choose from.

One of the most beneficial factors about opting for a round cut diamond is the fact that it is easier for an institute like the Gemological Institutes of America to evaluate the cut quality of the diamond. With some alternative shapes, such as the princess cut, no grade on the cut is provided on a diamond grading certificate. This can make it more difficult to identify a diamond with a better cut – and cut plays a vital part in the overall appearance of the diamond.

On the other hand, one of the most disappointing facts about round cut diamonds is that they often cost somewhat more than alternative shapes. This is due to the fact that more of the original stone is lost during the cutting process. In turn, this leads to a higher cost as compared to a princess cut or emerald cut of a similar size.

​Brilliant round cut diamonds are also available in many different colors. While the colorless diamond still remains the most popular choice when it comes to opting for a brilliant round cut diamond, there are many fancy colored options out there as well.

When buying a round cut diamond, it is essential to look at all of its gradings on the accompanying report. In particular, consider the 4C's used to evaluate a diamond – color, clarity, carat weight, and cut. Additionally, you should take a closer look at the specific cut values specified. If you want a better-looking diamond, then try to opt for a round cut diamond with a table that falls between the range of 53% and 58%, and a depth between 59% and 62.3%. The crown angle should be between 34 and 34.9, with a pavilion depth between 42.8 and 43.2. It is usually best to opt for a round cut diamond that has no culet and a thin girdle. The length-to-width ratio should ideally fall between 1.00 and 1.01.


​The brilliant round cut has been popular since its initial design and will continue to hold a place amongst the top diamond shapes for many years to come. This option is perfect for virtually any type of jewelry, be it a wedding band, an engagement ring or some earrings. If you are considering the round brilliant cut, then this guide holds important information to help you make a smarter buy.