The Most Popular Diamond Shapes for Your Engagement Ring

No matter what style of engagement ring you choose, the center diamond is (almost) always the focal point. It’s essential to select a diamond you love and one that aligns with your vision. One key factor to consider is the diamond shape.

Diamond Cut vs Diamond Shape

While the terms "diamond cut" and "diamond shape" are often used interchangeably, they actually refer to different things. The “cut” of a diamond refers to how well it’s crafted, including its angles and proportions, which directly impact its brilliance. "Shape" refers to the diamond's overall form, such as round or oval. The diamond cut is one of the “4 Cs” of diamond grading and is crucial to maximizing sparkle.

In this post, we’ll explore the most popular diamond shapes.

The Most Popular Diamond Shapes in 2025

Round

Round diamonds have remained the most popular shape for engagement rings for years—and it’s easy to see why. No other diamond shape compares to the sparkle of a well-cut round diamond. If you want a diamond that catches the light and dazzles across the room, a round cut is the perfect choice.

Oval

An oval diamond is essentially an elongated round, offering a sleek, modern look. Oval diamonds are flattering on almost all hand shapes. However, if they are cut poorly, they can have a "bowtie" effect in the center, which diminishes their sparkle.

Pear

A pear-shaped diamond combines the beauty of a round and oval but with a teardrop form. Pear diamonds tend to appear larger than other shapes, which contributes to their lasting popularity. They’re a great option for those drawn to vintage-inspired styles, with a history dating back to the 1400s.

Princess

A princess-cut diamond is often described as a square-shaped diamond, but its sharp corners and modern look make it much more appealing. While they don't offer the same sparkle as round diamonds, their geometric design still makes them a beautiful option for many brides.

Emerald

Emerald-cut diamonds are rectangular with cropped corners and have a sophisticated, clean look. Unlike brilliant cuts, they have step cuts, so they don't create the same kind of sparkle. However, they are stunning, with color and clarity being even more important in emerald cuts since inclusions are more visible.

Cushion

Cushion-cut diamonds are similar to round diamonds but have a square or rectangular shape with rounded corners. They combine old-world charm with a modern appeal and provide excellent sparkle, making them a top choice for brides who like the square or rectangular style without sacrificing brilliance.

Radiant

Radiant-cut diamonds are often confused with cushion cuts, but they’re different. Radiant diamonds feature deep cuts, allowing for greater sparkle compared to the emerald cut. However, the deeper cuts can also make the diamond appear smaller, so it's important to consider size and sparkle together.

Other Diamond Shapes

Some other, less common diamond shapes include marquise, asscher, heart, and trillion. Like any fashion trend, diamond shapes can ebb and flow in popularity. For instance, the marquise shape was all the rage in the 1970s.

Visit Koser Jewelers!

Ready to find your perfect diamond? Whether you're drawn to a classic round or something more unique, Koser Jewelers can help you discover the diamond shape that's right for you. Our expert jewelry consultants are here to guide you through your options and help you make an informed decision. Stop by or give us a call at 717-653-4941 today!