When it comes to diamonds, size and clarity are crucial, but proportion is the key factor that affects a diamond's brilliance and overall appeal. The proportion refers to the relationship between a diamond's multiple dimensions—its width, height, and the angles of its facets. Diamonds with proper proportions reflect light more efficiently, increasing their shine. Let's look at the perfect proportions for round, princess, emerald, pear and oval diamonds.
Round Diamonds
The round brilliant cut is the most popular diamond shape, renowned for its exceptional sparkle. Ideal proportions for round diamonds focus on the depth and table percentages. A table percentage percentage ranges from 54-57% and a depth percentage of 61-62.5% are considered optimal. The girdle, which is the thin edge dividing the crown and pavilion, should be thin to medium to maintain symmetry and durability. As for the culet, no culet or a very small one is preferred to prevent light leakage and preserve the diamond’s flawless appearance. These proportions ensure that light enters the diamond, bounces off the pavilion (the lower part), and exits through the crown (the upper part) in a dazzling display of brilliance.
Princess Diamonds
Princess-cut diamonds, with their sharp corners and square shape, offer a modern alternative to the classic round diamond. For princess cuts, the ideal table ranges from 62-70%, and the depth should be 64-75% of the diamond’s width. These proportions maximize light return while maintaining the diamond’s shape and structural integrity. A well-proportioned table and depth ensure that the diamond retains its brilliance and fire. Its girdle should be thin to slightly thick, protecting the pointed corners while maintaining a sleek look. The culet, ideally, should be absent, as the presence of one could interrupt light reflection and diminish the stone’s brilliance.
Emerald Cut Diamond
The emerald cut, with its step-cut facets and rectangular shape, offers a distinctive, sophisticated look. Unlike other cuts, the emerald cut focuses more on clarity and symmetry than on brilliance. To maintain its unique appeal, an emerald cut diamond should have a table of 60-65.5%, with a depth of 60-65%. These proportions allow light to travel across the large facets, enhancing its elegance rather than sparkle. The girdle should range from very thin to slightly thick, and the culet should be none to keep the facets sharp and reflective. Emerald cut diamonds are prized for their simplicity and understated beauty, making proportions critical for maximizing their allure.
Pear-Shaped Diamonds
The pear-shaped diamond, or teardrop diamond, is a hybrid of the round and marquise cuts, offering a distinctive and elegant look. The table percentage for pear diamonds should be between 55-60%, and the depth should be from 59-63%. This balance ensures that light is dispersed evenly, enhancing the diamond’s fire. The girdle should be thin to slightly thick to protect the delicate pointed tip of the pear. A small culet or none is preferred, as it ensures maximum light reflection without any visual distractions.
Oval Diamonds
Oval-shaped diamonds combine the brilliance of round diamonds with a unique, elongated shape. The ideal depth for oval diamonds is between 55-60%, with a table percentage of 59-63%. The girdle should remain very thin to slightly thick, ensuring structural integrity without detracting from the stone’s elegance. As with round diamonds, the culet should be none or very small to enhance light performance. These proportions help to minimize the bow-tie effect, a dark area that can appear in the center of the diamond due to light leakage.
Choosing the Perfect Diamond
Understanding diamond proportions is essential when selecting a diamond, as it directly impacts the stone's beauty and value. At MYZA, we specialize in offering diamonds that are not only perfectly proportioned but also ethically sourced and sustainable. Whether you’re looking for a round, princess, emerald or pear-shaped diamond, MYZA ensures you’ll find a piece that combines exceptional craftsmanship with the brilliance you deserve.
