Radiant Diamond Engagement Rings
Combining the best elements of emerald and round diamond shapes, radiant diamonds exhibit incredible brilliance and fire.
Price
Design style
What is a radiant cut diamond?
When grading diamonds of this shape, the radiant cut diamond is often labelled as a cut-cornered rectangular or square modified brilliant by the GIA.
Radiant cut diamonds have a very similar silhouette to an emerald shape, but their internal facet structure is more similar to that of a round diamond. This results in a lively stone, with an effervescent sparkle perfect for those who dress to impress.
Though the radiant has only been available for a short time, it’s quickly increased in popularity. You’ll always find radiant diamond engagement rings listed amongst the current most popular shapes.
What should I look for in a radiant cut diamond?
Like all diamonds, cut, clarity, colour, and carat are all very important factors to consider when choosing your radiant cut diamond. Radiant cuts have unique features that distinguish the shape from other fancy cuts, such as their brilliant facet structure and distinct shape.
When evaluating the cut of a radiant diamond, the ratio and the shape of the corners on the cut should be considered. It’s best to avoid radiant cuts with overly truncated corners, because these will appear misshapen. The length to width ratio of a radiant cut is also important, with 1.20-1.30 being the optimum ratio for a rectangular radiant, and 1.05 being the optimum ratio for a square radiant cut.
As with oval, pear, and marquise cut diamonds, the radiant cut can be susceptible to what’s known as a ‘bow-tie’ effect within its facets. A bow-tie is characterised by dark flashes in the centre of the gemstone caused by a poor cut. A radiant cut should have an even sparkle throughout the entire stone without any dark areas, so pay close attention to your radiant cut diamond and make sure your gemstone does not feature a large bow-tie.
Lastly, always look for eye clean clarity in a radiant cut diamond. The radiant cut diamond is extremely brilliant, so inclusions can be hard to spot, meaning that you can find eye clean radiant cut diamonds with an SI1 and SI2 clarity.

How much is a radiant cut diamond?
When set on a plain solitaire band a white gold, yellow gold, or rose gold engagement ring featuring a 1ct radiant cut diamond costs about £3,940. A platinum band set with a 1ct radiant cut diamond costs about £4,090.
For those who would like something more bold, a 2ct radiant cut diamond is the perfect statement diamond. When set on a plain platinum band, a white gold, yellow gold or rose gold engagement ring featuring a 2ct radiant cut diamond costs about £16,385. A platinum band set with a 2ct radiant cut diamond costs about £16,535.
What is the best setting for a radiant cut diamond?
The radiant cut diamond features brilliant sparkle like a round, combined with the straight lines of an emerald so the cut would suit both round and square accent gemstones. A radiant cut would be beautiful with a round brilliant cut halo, or a halo of Carré cut diamonds. Or try a radiant cut diamond set with two different metals, for a trendy two-tone look.
What celebrities have radiant cut diamonds?
As the radiant cut is a diamond that packs so much brilliance and sparkle, it is no wonder that celebrities such as Drew Barrymore and Brittany Lynne love the shape. The radiant cut diamond is a timeless shape that is sure to suit any style!
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