If you’re looking for the perfect diamond ring, you’re probably asking yourself “What are the different diamond shapes and how do I choose the right one?”
There are many options to choose from, and at Nelson Coleman Jewelers we understand that picking the perfect diamond shape can seem overwhelming. Just remember, choosing a shape is all about YOU. It’s all about what looks good on your hand and compliments your personality.
To help you find that perfect diamond, we’ve compiled a list of diamond shapes and the differences between each.
Very often in the jewelry industry, the term diamond “cut” is confused with diamond “shape.” The actual shape of the diamond refers to exactly what you think it does, the geometric form of the diamond. We will cover the different types of diamond shapes in this post.
The two terms are interchanged because ultimately the diamond shape is still cut into its form. Diamond cut truly refers to the quality of the how the diamond is processed in terms of proportions and symmetry. The “ideal” cut will optimize the gem to allow the most amount of light possible to travel through the diamond.
Numerous factors determine the quality of the cut, including the depth, crown height, cut angles and more. Cut is one of the 4 Cs of Diamonds that can be customized to pick your dream diamond. But let’s get back to the diamond shapes.
As you’re shopping, you may find that you prefer different shapes for rings, earrings, and other styles of jewelry. If you’re wondering what diamond shapes work best for engagement rings, it truly depends upon your personal preference.
Regardless of your diamond shopping motive, if you’re looking for a stone with maximum brilliance (brightness) and fire (sparkle), then these shapes may be right for you.
The most popular diamond shape is the round brilliant. It is also the most researched, accounting for about three-quarters of all diamonds sold. If you’re looking for a diamond that shines brilliantly in any light, a round brilliant is what you want because they are cut to optimize light reflection. With 58 facets, this classic shape is prized for its sparkle and symmetry. Whether set in a solitaire or vintage-style ring, it remains a timeless choice for its beauty and versatility.
The princess cut is the second most popular shape and is commonly used in solitaire engagement rings. If a round diamond doesn’t fit your style, try the rectangular shaped princess cut diamond for a more contemporary look. This cut features sharp, uncut corners and a brilliant faceting pattern that gives it exceptional sparkle, especially in clean, modern settings. Its bold geometry makes it a standout choice for those who prefer sleek lines with maximum brilliance.
The radiant cut is similar to the princess cut, but is square in shape and is marked by trimmed edges. This cut combines the sleek appearance of the emerald shape and the brilliance of a round shape, making it an excellent choice for engagement rings. Its beveled corners not only enhance durability but also make it a practical choice for daily wear. With 70 facets, the radiant cut delivers an impressive light return, offering both fire and depth in a uniquely structured silhouette.
Oval diamonds are similar in radiance and fire to round brilliant diamonds, but the oval shape offers one advantage: It makes fingers look long and slender due to its elongated shape. The soft curves of the oval cut also create a graceful, flowing silhouette that feels both timeless and distinctive. Its brilliance and flattering proportions make it a popular choice for engagement rings with a romantic feel.
The marquise is similar to the round and oval shapes, but creates a diamond with a larger surface area, making it appear larger. Choose a marquise diamond if you are trying to maximize size appearance. Its tapered points draw the eye outward, creating a dramatic, elongated effect that adds elegance and flair to any setting. This cut is often chosen by those who love vintage-inspired styles with bold character.
Also known as a teardrop, the pear-shaped diamond is a combination of the marquise and the round brilliant. This unique design shines like a round brilliant while also making fingers look long and slim. The tapered point adds visual interest and directional movement, making it a dynamic focal point in pendants and rings. It's an ideal shape for those who love a mix of classic sparkle and unexpected elegance.
Also known as pillow cut diamonds, the cushion cut has a square shape with rounded corners. This shape highlights a diamond’s clarity and is flattering with vintage settings. Its soft, romantic outline blends old-world charm with modern brilliance, making it a favorite in antique-style rings and halo designs. Cushion cuts also tend to retain color beautifully, making them a great option for colored diamonds.
Emerald shaped diamonds have a uniquely cut pavilion (the bottom portion of a diamond) and a large rectangular surface that creates a mirror-like effect. While it emits less fire than round or oval diamonds, this shape highlights clarity and has a modern, sophisticated appeal. Its elongated form creates a graceful, slimming effect that suits elegant and minimal designs, especially in classic engagement ring settings.
The Asscher cut is nearly identical to the emerald cut except it is square in shape. Both Asscher and emerald diamonds emit less fire, but they are more transparent and offer a sleek, elegant appearance. With deeply clipped corners and layered step facets, the Asscher cut creates a mesmerizing "hall of mirrors" effect. It’s an ideal choice for those who love bold geometry and vintage-inspired sophistication.
Let your creative nature flow with a truly unique diamond shape. Along with the most popular diamond shapes discussed, you can choose from these dazzling cuts.
Heart shape
Truly a symbol of love, heart shape diamonds are perfect for solitaire pendants and rings.
Fantasy Cuts
Fantasy cut diamonds are defined as any shape other than the traditional styles listed above. They include:
Now, please don’t think this is the whole kit and caboodle! We haven’t even talked about grading diamond cuts yet!
A well-cut diamond can increase in value up to 50%. This is because it takes certain types of ‘rough’ to be able to cut a diamond to its optimal standard. When you’re talking about round diamonds, depending on what laboratory or manufacturer you are talking to, it could be called anideal cut, orexcellent cut. In the industry however, the most common term to refer to an optimally cut diamond is ideal.
