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Engagement ring styles keep changing. For a long time, round diamonds were the most loved. Then, famous people like Hailey Bieber, Blake Lively, and Kate Middleton started wearing oval diamonds, and they became popular too. Now in 2025, the marquise-cut diamond is trending again, especially after Selena Gomez got engaged with one in 2024. But just because a diamond shape is trending doesn't mean it’s the best one for you.
There are many beautiful diamond shapes to choose from when buying an engagement ring—jewelers usually recommend 12 popular ones. To find the right shape for you, it's important to think about your personal style and what matters most to you. Do you love modern, trendy jewelry, or are you more into vintage and classic pieces? You should also think about whether you want a ring that makes your fingers look longer, if you want a big-looking center diamond, or if you prefer a simple ring with one stone or a design with multiple diamonds. Understanding what you like will help you choose the perfect diamond shape—one that you'll love wearing every day for years to come.
Whether you’re looking for something new and trendy or you love old-fashioned, vintage styles, these are the 12 most popular diamond shapes you should know about when choosing an engagement ring.
Related: 25 of the Most Expensive Celebrity Engagement Rings
Round-cut diamonds are a classic and timeless choice that has been loved for many years. They never go out of style and are perfect if you want a ring that you can one day pass down to your children. While they may not be the most modern or trendy option, they are still a favorite for many.
These diamonds are also very versatile. They look beautiful on their own (solitaire), with two or three stones, or even in stylish vintage designs. If you like simple, elegant, and traditional jewelry, this shape is a great option.
Famous stars like Emily Blunt, Carrie Underwood, and Mila Kunis have also chosen round-cut diamonds for their engagement rings.
whether you want to feel like a princess on your special day, the princess-cut diamond is a great choice. This diamond shape is square or rectangular and works well with many different ring styles, which makes it very popular.
The best thing about a princess cut is that it has a modern, sharp look and shines brightly, just like round diamonds—but it usually costs less than round ones.
Just one thing to keep in mind: because the corners are sharp, this diamond can chip or fall out easily, so it's important to choose a strong and protective setting for it.
The cushion-cut diamond is a beautiful shape that looks like a soft pillow because it’s square with rounded corners. It has 58 large facets, which help it shine nicely and give it a soft, glowing sparkle.
This diamond style became popular again after Meghan Markle received a cushion-cut engagement ring from Prince Harry in 2017. It has a lovely vintage feel, which makes it perfect for old-fashioned or romantic ring designs.
However, cushion cuts don’t sparkle as much as some other shapes, and while they can look good in modern rings, they aren’t considered the most modern style.
If you like a simple, elegant, and rich-looking style, an emerald-cut diamond might be perfect for you. This diamond has a long, rectangular shape with straight lines and cut corners, giving it a stylish, vintage feel. Celebrities like Sofia Richie, Amal Clooney, and Beyoncé all wear emerald-cut engagement rings.
This cut has a soft, mirror-like sparkle, not super shiny, but very classy. Its shape makes fingers look longer and thinner, which looks great in photos. But since it has fewer cuts to hide flaws, you need to choose a diamond with very good clarity and color. It’s a great pick if you want something elegant but not too flashy.
The marquise-cut diamond, also called the Navette cut, is known for its elegant and royal look. It became even more popular after Selena Gomez got engaged with a marquise-cut ring in December 2024.
This diamond has a long, narrow shape with pointed ends and curved sides—it kind of looks like a fancy football. Its shape makes the diamond look bigger and helps fingers appear longer. It also gives off a beautiful sparkle.
However, there are a couple of things to keep in mind. The pointed tips can easily chip or break if not protected with the right setting. Also, if the diamond isn’t cut properly, it can show a dark shape in the middle called a “bowtie,” which many people don’t like.
The oval-cut diamond is a longer version of a round diamond and shines just as beautifully. Its many small cuts make it very sparkly, and it’s a favorite among celebrities like Kate Middleton, Blake Lively, and Olivia Culpo. The shape looks elegant and unique, and it also helps make your fingers look longer and slimmer.
However, if it’s not cut properly, it can show a dark spot in the center called a “bowtie” and may also reveal flaws inside the stone. One smart way to handle this is by choosing a salt-and-pepper oval diamond, where the natural marks become part of the diamond’s unique beauty.
The radiant-cut diamond lives up to its name by giving off lots of sparkle. It was created in 1977 and looks a bit like an emerald-cut, but it has deeper cuts that help it shine even more.
This shape is great for people who want something classic but with a twist. It’s elegant and timeless, yet a little more sparkly than some traditional shapes. However, because of its deep cut, the diamond can look smaller than it really is. It’s also not very common, so you might not find many options in stores. A well-known fan of this shape is Brittany Mahomes.
The pear-shaped diamond, also known as a teardrop, is a mix of the oval and marquise shapes. It’s been around since the 1400s and is perfect for people who love vintage styles and want something a little different. Margot Robbie chose this unique and stylish shape for her engagement ring.
Pear-shaped diamonds look bigger than they really are because more of the stone is visible from the top. So if you want a ring that looks large, this is a great option. But be careful—because of the pointed tip, the diamond can chip easily, so it needs a strong setting. Also, if it’s not cut well, it might show marks inside the diamond and may not sparkle as much.
The Asscher-cut diamond is a stylish and eye-catching shape that became more popular after Carrie Bradshaw wore it in Sex and the City. It was first designed in 1902 by a jeweler named Asscher.
This diamond has a unique octagon shape with 58 step-like cuts, giving it a beautiful sparkle and a cool, vintage Art Deco look. It’s also a strong shape because it doesn’t have sharp edges, so it’s less likely to chip and looks good in many ring styles.
However, this cut can easily show flaws inside the diamond, so it’s important to choose a high-quality, clear stone to get the best look.
The heart-shaped blue diamond is a symbol of love and romance. While it’s not the most common choice for engagement rings, that’s exactly what makes it special and unique. It’s a great pick for someone who is a true romantic at heart. This shape looks beautiful on its own (solitaire) or in a more detailed ring design.
Because it’s a complex shape that needs to be perfectly balanced, it can be more expensive due to the extra work involved in cutting it. Some people also see it as a trendy choice rather than a timeless one, so if you’re looking for a classic style, this might not be the best fit.
The baguette-cut black diamond is a long, rectangular-shaped diamond that became popular in the 1920s during the Art Deco era. It has 14 simple facets, which give it a clean and elegant look. Baguette diamonds are usually used next to a center stone in multi-stone rings and are perfect for people who like classic, structured designs.
Because these diamonds have fewer cuts, it’s important to choose one with very good clarity and precise cutting, as flaws are easier to see in this shape.
Trillion-cut black diamonds come from the Netherlands and are a great choice for people who want a unique and different style. They have a triangular shape with either pointed or rounded corners, and their shallow cut makes them look bigger than they really are.
These diamonds can be used as side stones, in a three-stone ring, or even as a single center stone. They look beautiful either way. Because of their sharp corners, they need a strong setting—like a bezel or three-prong—to protect them from chipping.
While they don’t sparkle as much as some other shapes, they still have a nice, elegant shine, making them perfect for someone who wants a ring that’s stylish but not too flashy.
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