Round Shape Diamonds
Round Shape Diamonds: Most loved shape!!
Every shape has its own features and uniqueness
As we know now, there are many different shapes that come in diamonds.
Round shape diamonds are one of the most popular and loved diamond shapes in the world. It is believed that the round-cut diamond is 50% of all the diamonds that are sold in the world. Round-cut shape diamonds are popular for their brilliant cut and sparkling nature.
The perfect brilliant-cut diamond sparkles the most compared to all other shapes of diamonds. As time goes on, this shape has made its name in the jewellery-making business as they are used in engagement rings, bangles, earrings, and other jewellery as well.
History of round-shaped diamonds
Many cuts were introduced in the 16th century, one of which is the rose cut. It is believed that the round-cut diamond shape came in the 17th century when diamond manufacturers started using more reliable cutting patterns. Later, the Old Mine and Old European cut, a series of transformations in the diamond industry, came into existence in the 18th century.
The first Brilliant round cut was created in the year 1919 by Marcel Tolkowsky, a gemmologist, who, with his mathematical skills, used a formula for making the diamond in such a way that gives maximum sparkle and brilliance. It was he who explained about the state of the cut of the diamond, that is deep cut or a shallow cut.
What are the reasons for the popularity?
Round cut diamonds have made a reputation for being unique, loved, and one of the most purchased shapes of all time. So, here are the reasons for the round cut shape diamond:
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Sparkle and brilliance: Sparkle and brilliance are the two important factors when anyone is buying or purchasing diamonds. The sparkle of any diamond depends on the diamond’s brilliance. The Ideal Round cut shape will reflect the maximum sparkle of any other shape of the diamond. For example, A 2-carat Ideal round shape diamond piece will create a quality of eye-catching with its brilliance, shine, and sparkle features.
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Classic: The Round cut diamonds have 58 facets, which help the light to travel and make the diamond sparkle. The diamond manufacturers have developed the technique of making the ideal round-cut diamond. These diamond shapes provide a classic look with their gorgeous, shining appearance.
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Settings: The round-cut shape diamond can give a classic to modern style to any design of jewellery. When we talk about engagement rings, many different settings can be used with the round-cut diamond shape.
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Easy: These diamonds are loved and are purchased by diamond lovers around the world. So, the easy selling and purchasing of these kinds of diamonds is compared to other shapes of diamonds. There will always be demands for the round cut shape diamond.
- Generations: The making and look of the round-cut diamond are so stylish and elegant, which makes it live in the family for generations.
Difference between the brilliant-cut diamond and the Old European cut

The Brilliant cut diamond is the type of cut where many facets are created to reflect the proper light from the diamond, whereas the old European cut has the same type of arrangement with the facets of the diamond. Both types of diamond cut can have 57 or 58 facets. The Brilliance, as the name suggests, are known for its brilliant and sparkling light, whereas the old European cut will provide warmer and deeper effects in its sparkling feature. The main difference is the cutting and the symmetry of the diamond. As the old European cut was having a small table, but a big crown with a deep or shallow-cut, which is much thicker than the modern or brilliant-cut diamond and which gives the vintage look to the Old European cut diamond.
How are round-cut shape diamonds graded?
There are many different laboratories, like GIA, IGI, etc., that provide diamond certificates and have different measuring criteria. They include the percentage of the table, the angle of the crown and pavilion, culet size, depth, polish, the thickness of the girdle, symmetry, and many others.
The table below shows the different symmetry percentages for the different categories.
EXCELLENT | VERY GOOD | GOOD | FAIR | POOR | |
Table % | 53 – 58 | 52 – 53 or 58 – 60 |
51 or 61 – 64 |
50 or 65 – 69 |
< 50 or > 69 |
Depth % | 59 – 62.3 | 58 – 58.9 or 62.4 – 63.5 |
57.5 – 57.9 or 63.6 – 64.1 |
56.5 – 57.4 or 64.2 – 65 |
< 56.5 or > 65 |
Crown Angle | 34 – 34.9 | 32.1 – 33.9 or 35 – 35.9 |
30.1 – 32 or 36 – 37.9 |
29 – 30 or 38 – 40.5 |
< 29 or > 40.5 |
Pavilion Depth | 42.8 – 43.2 | 42 – 42.7 or 43.3 – 43.9 |
41 – 41.9 or 44 – 45.5 |
39 – 40.9 or 45.6 – 48 |
< 39 or > 48 |
Girdle | Thin to Sl. Thick |
Very Thin to Sl. Thick |
Very Thin to Thick |
Very Thin to Very Thick |
Ex. Thin to Ex. Thick |
Culet | None | Very Small | Small | Medium | > Medium |
L/W Ratio | 1.00 – 1.01 | 1.02 | > 1.02 |
Conclusion
If you are looking for a diamond with remarkable brilliance and unique sparkle, then you should select the round-cut shape diamond. It might be costlier than all the other diamond shapes, but it is worth it.

