With an incredible 70 facets, the radiant cut is one of the most brilliant diamond shapes available today. It’s a new cut, created just over 30 years ago by master diamond cutter Henry Grossbard. Grossbard wanted to combine the best elements of the emerald and round brilliant cuts.

True to its name, this cut is truly radiant. While the octagonal shape and cropped corners do make it similar to the emerald cut, the faceting is reminiscent of the round brilliant cut. This combination gives the radiant considerable fire and sparkle.

Though the radiant has only been available for a short time, it has quickly increased in popularity. You’ll always find the radiant listed in the top ten most popular diamond cuts.

Radiants are the ideal cut for coloured diamonds. Due to its faceting structure, this cut provides a depth which emphasises the colour tones of any diamond.

trilogy engagement ring with radiant cut with diamond halo and tapered baguettes set in platinum and rose gold
radiant diamond center with diamond halo and three sided diamond pave engagement ring
radiant cut diamond with round and carre cut diamond halo engagement ring

The ideal ratio for a traditional, rectangular shaped radiant cut diamond is 1.25.

radiant diamond ratio

The chart below serves as a general guideline for evaluating the cut of a radiant cut diamond.

radiant diamond cut guide

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