The radiant cut sits between two traditions. It takes the cropped-corner outline of the emerald cut and applies brilliant-style faceting, so a clean rectangular or square stone returns the kind of fire you would expect from a round. The result reads as architectural from above and lively in the light.
A shape that works hard for the stone
The faceting is the defining feature of a radiant cut. Those many small facets break up light across the whole table, which makes the cut forgiving of characteristics a step cut would expose. Inclusions tend to disappear into the sparkle, and body colour reads less obviously than it would in an emerald or Asscher cut.
This has two practical consequences when you choose a stone with us. You can often select a slightly lower clarity grade with no visible difference to the eye, and the cut handles fancy colour well, drawing out the warmth in a champagne or yellow diamond rather than washing it out.
Choosing the stone
Radiant cuts come as elongated rectangles or near-squares, and the ratio you choose changes the character of the ring. A longer stone flatters the finger and feels classic; a squarer stone feels more contemporary. We talk that decision through in person, alongside the wider questions of cut, colour, clarity and carat weight.
- Length-to-width ratio, from a square 1:1 to a slender 1.5:1 or longer
- Natural or laboratory-grown, both independently graded
- Colour, including the fancy yellows and champagnes the faceting suits
- Clarity, where the brilliant facets give you useful room to choose
Settings that suit the cut
The radiant is one of the more adaptable shapes on the bench. It looks composed as a solitaire, where the clean outline does the work, and it sits well in a three-stone design flanked by tapered baguettes or smaller radiants. A halo of brilliant-cut stones adds further sparkle and can make a modest centre stone read larger.
Whichever direction you take, the corners need protecting. We typically set radiant cuts in secure claws or a part-bezel, worked in platinum or 18ct gold, so the stone is held safely without hiding its shape.
Made in London, by us
Every ring is designed in CAD and hand-finished at our own bench at The Goldsmiths' Centre in Farringdon, with casting and setting carried out by trusted specialist workshops. We have worked this way as a family-run workshop, our founder here since 1999, and you are seen by appointment at a private studio. Settings start from £800, and complete bespoke engagement rings start from £1,500.
Common questions
Does a radiant cut sparkle as much as a round brilliant?
It comes close. The brilliant-style faceting gives a radiant cut far more fire than a step-cut emerald or Asscher, while keeping a cleaner geometric outline than a round. If you want maximum sparkle in a rectangular shape, the radiant is usually the answer.
Can I use a lower clarity diamond in a radiant cut?
Often, yes. Because the facets scatter light across the stone, small inclusions are harder to see than they would be in a step cut. We assess each stone with you and recommend a grade that looks clean to the eye while making sensible use of your budget. You can read more on our pages covering diamond clarity and the wider 4Cs.
Is a radiant cut good for a coloured diamond?
It is one of the best choices. The faceting concentrates and returns colour rather than diluting it, so fancy yellows, champagnes and other tints show with real depth. We work with both natural and laboratory-grown coloured stones.
If a radiant cut is the direction you have in mind, we would be glad to talk it through in the studio. Book a consultation to begin, or read more about our approach to bespoke engagement rings.
