The Radiant Cut Diamond- What You Need to Know | Rare Carat

What is it?

Inspired by the fire and shine of the more expensive modern round brilliant cut, as well as the angular lines of the emerald cut, the radiant cut features varieties of square or rectangular outlines with dazzling facets. First patented in 1977 by the great diamond cutter Henry Grossbard, the term “radiant” is now used broadly as a trade-term. However, you will likely see the technical description of “Cut-Cornered Rectangular Modified Brilliant” on GIA reports instead of “Radiant.”

The beveled corners of these stones give them a curved, but still square look while the modern round brilliant-like pavilion facets create intricate and hypnotic sparkling patterns. The facets also can hide imperfections in the stone that might otherwise be visible to the naked eye. This means that you may be able to save some money by choosing a stone with less clarity and trade up to a larger diamond!

A radiant cut diamond, set against a white background

Radiants and Color

They can also serve to enhance and deepen color. As a result, you will find many fancy-colored diamonds in addition to the colorless variety. Also, for those who want to wear rings that go beyond the classic solitaire look and include multiple stones, these diamonds are a good option because their straight sides make them easy to set adjacent to other stones. It’s no wonder that many celebrities, such as J-Lo and Lea Michele, have opted for radiant cut bling in their engagement rings!

Three-stone diamond ring with a radiant cut center stone in a white gold setting

Not Like Other Elongated Shapes

Because radiants do not have sharp corners which can snag or break, they are more durable than other square-shaped stones and are an especially good option for those who work with their hands or are prone to exaggerated gesturing. Giving a flattering shape to the finger, they can appear larger than their round counterparts (always a plus!).

The facets of radiant cut diamonds are not held to exact proportions, and the color range represented on the market is vast, so each stone has its own unique personality. Therefore, when you find the gem that speaks to you, it’s literally a one-of-a-kind match!

Radiant Cut Diamond FAQs

What is a radiant cut diamond, and why does it shine so much?

A radiant cut is a hybrid between a round brilliant and an emerald cut. It has square or rectangular outlines with cut corners, and it’s faceted in a way that maximizes fire and brilliance — similar to a round diamond — while still offering the bold silhouette of an emerald shape.

How does the facet pattern of a radiant diamond hide imperfections?

Because of its “modern brilliant–style” pavilion facets, a radiant cut has a lot of internal sparkle that helps disguise inclusions that might otherwise be visible. Rare Carat notes that this means you can sometimes go for a slightly lower clarity grade and still get a stone that looks eye-clean — which can be a smart way to stretch your budget.

Do radiant diamonds come in colored stones as well, or are they only colorless?

They absolutely come in color too. Radiant cuts are often used for fancy-colored diamonds — the many facets help deepen and intensify color.

Are radiant cut diamonds sturdy, or do I have to worry about chipping the corners?

Radiants are actually more durable than some other square-shaped cuts. Because their corners are beveled (not sharp), there’s a reduced risk of chipping, making them a practical choice if you wear jewelry daily or lead an active lifestyle.

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Emily Frontiere

Emily is a GIA Graduate Gemologist and also holds a Master's Degree in Medieval Literature. She has always loved jewelry for its dazzling allure, but her interest in the field was greatly increased when reading in school about medieval sensibilities in regards to gemstones i.e. their use as medicines or talismans.