Diamond Carat with Loupe and Gia Certificate | Lisa Robin

Diamond Guides

About Radiant Diamonds

Radiant cut diamonds also display a high brilliance, they are a rectangular shape with truncated corners. Learn more.

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About Radiant Cut Diamonds

If you're in the market for an engagement ring, consider the radiant-cut diamond. It shares the outline of an emerald-cut diamond but boasts more brilliance and elongates the finger. Plus, it comes at a significant discount compared to round diamonds. To make an informed decision, it's essential to weigh the pros and cons of this modern cut and compare it to other diamond shapes. By doing so, you can find a high-quality radiant-cut stone that fits your budget.

Radiant cut diamonds are an excellent choice if you want a bright, sparkly diamond. They are one of the most brilliant diamond cuts, meaning they reflect a lot of white light to create a bright sparkle. This high brilliance means that you can even choose a diamond with a poorer color grade, as it can be hidden by the gem's bright glimmer and faceting.

How does a Radiant Cut Compare to a Princess Cut?

There are distinct differences between princess-cut and radiant-cut diamonds. While the main distinction is their shape, with princess cuts being square and radiant cuts having beveled corners, the facet pattern also varies. Non-experts can easily tell them apart due to their shape. Radiant cuts are generally more durable as they have sharp corners that are less likely to snag and chip. Radiant-cut diamonds are typically elongated, while princess-cut ones are square, but there are also square radiant-cuts and elongated princess-cuts available.

Diamond Guides

Round brilliants can be modified into other shapes. Find out more.


Pavilion depth is measured from the bottom of the girdle to the culet. The pavilion depth that's too shallow or too deep will allow light to escape from the side or bottom of the stone. Light will be directed through the crown of a well-cut diamond.

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That’s why we are here to guide you through every step - from understanding what carat, color, cut and clarity mean, to designing the perfect ring.


Knowing how light behaves inside a diamond helps us understand diamond cuts. There are three main ways to classify diamond sparkle.

, or fire, separates colored light into its full spectrum. While white light enters and exits through the table, flashes of color are visible when the light is emitted from the center. This is done through the crown.

Brilliance. The amount of white light emitted and reflected out of a diamond determines its brilliance. Diamonds absorb natural light, then split it into the full spectrum of colors thanks to their wide top table. As the light bounces back and reflects within the diamond, it is projected upwards and leaves the table as pure white light.

Scintillation. A diamond's scintillation refers to how light bounces off its facets when moved, creating a glistening and twinkling effect. Light will emanate from diamonds when they are well cut, creating the mesmerizing sparkle we all love.


An Excellent diamond cut will enhance the appearance of other qualities of the stone, like the color and clarity grade. It can even make a diamond appear larger. When a diamond is cut to an Excellent (GIA) or Ideal (IGI) grade, the polish and proportions of the stone will produce brilliance, fire and scintillation that work together in harmony, creating a charmingly sparkly diamond.

The Radiant Cut

f you're looking for a diamond with a bright and sparkly appearance, radiant cut diamonds are an ideal option. They are known for their exceptional brilliance, as they reflect a significant amount of white light to produce a dazzling glow.

Shop Square and Rectangular Styles for Radiant Cut Diamonds

Square Styles

Shown here with princess cut diamonds, any setting for a square shape can also hold a square radiant cut.

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Rectangular Styles

Shown here with an emerald cut diamonds, any setting for a rectangular shape can also hold a rectangular radiant cut.

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How does the sparkle of a radiant diamond compare?

A radiant cut diamond has beautiful brilliance that’s similar to a round diamond. he radiant cut boasts 70 facets, making it one of the most dazzling diamond shapes that can be found in the market today.

Do Radiant Diamonds look bigger than other shapes?

Elongated radiant diamonds tend to appear slightly larger than other diamonds of a similar carat weight because of their length.

Which diamond shape is the rarest?

It is more difficult to find some diamond shapes than others. The demand for asscher diamonds and radiant diamonds is much lower than for other diamond shapes, making them rarer than most diamond cuts. They are followed closely by marquise and hearts.

What diamond shape is the most popular?

Due to many of the reasons already stated, the round brilliant diamond continues to be the most popular diamond shape in the United States. Followed by oval diamonds, pear diamonds, emerald cut diamonds, and cushion cut diamonds.

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