Collection: Radiant Cut Diamond Engagement Rings

The elongated radiant cut is the more sought-after of the two radiant cut proportions — its longer rectangular outline creates the same finger-flattering elongation that makes the oval so popular, but with sharper, more defined corners and the extraordinary brilliance of the radiant cut's full brilliant facet pattern. An elongated radiant cut diamond sits across the finger with impressive visual coverage and a distinctly modern, architectural presence that a round or cushion cut simply cannot match.
Our elongated radiant cut engagement rings are available in natural and lab grown diamond across every setting and metal. The elongated radiant pairs particularly well with a solitaire setting — the clean band allows the stone's rectangular outline to take full visual priority — and equally well with yellow gold, which gives the bright white diamond a warm, classic contrast that amplifies both elements.

A radiant cut diamond solitaire engagement ring is the most direct way to showcase the radiant cut's extraordinary light performance. With no accent diamonds competing for attention, the full brilliance of the radiant cut — its 70 facets delivering fire and scintillation across a rectangular footprint — is completely unobstructed. The result is a ring of outstanding visual impact despite its clean, minimal design.
Our radiant cut solitaire collection spans every carat weight in both four-prong and six-prong configurations, in natural and lab grown diamond across all metal types. The solitaire radiant cut engagement ring is our most popular choice for buyers who want maximum diamond presence in the most confident, uncluttered setting.

A radiant cut halo engagement ring surrounds the rectangular centre diamond with a continuous border of smaller round brilliant accent diamonds, amplifying the apparent size of the radiant cut and delivering sparkle across the entire face of the ring. The halo is particularly effective around a radiant cut because the contrast between the rectangular centre stone and the round accent diamonds creates a visually dynamic, sophisticated design.
Our radiant cut halo engagement ring collection includes single halo designs, radiant cut pave engagement rings for band-to-stone sparkle continuity, and radiant engagement ring with halo options in both natural and lab grown diamond. A radiant cut halo ring makes an outstanding choice for buyers who want maximum visual presence without necessarily moving up in carat weight.

A hidden halo radiant engagement ring places the accent diamonds beneath the rectangular centre stone rather than around it — from above, the ring reads as a clean, architectural solitaire. From the side, a row of sparkling diamonds is revealed tucked under the radiant cut, adding brilliance and apparent size while keeping the ring's top profile minimal and modern. Our hidden halo radiant cut engagement rings and radiant cut hidden halo engagement rings collection includes both single and double hidden halo configurations in natural and lab grown diamond.

A three stone radiant cut engagement ring places the radiant cut's rectangular brilliance at the centre of a design full of meaning — the three stones representing your past, present, and future together. A radiant cut centre stone flanked by two matching radiant side stones creates a continuous flow of rectangular brilliance. A radiant centre with round or trillion side stones creates a beautiful geometric contrast. Our three stone radiant engagement ring and radiant cut three stone engagement ring collection spans both configurations in natural and lab grown diamond across all metals.

The radiant cut is one of the most rewarding shapes for carat-conscious buyers — because it distributes its weight across a rectangular face rather than a circular one, a radiant cut diamond appears larger on the hand per carat than most other shapes.
At one carat, a radiant cut diamond measures approximately 5.5mm x 5.5mm in a square proportion, or around 7mm x 5.5mm in an elongated proportion — a striking, present stone for everyday wear. At one and a half carats the radiant becomes noticeably more impressive. At two carats it is genuinely bold and beautiful. Two and a half carats and three carats are our most popular larger sizes — a 3 carat radiant cut diamond ring is one of the most spectacular-looking engagement rings available at any price point because the rectangular outline and full brilliant facet pattern deliver extraordinary presence on the hand. From four carats upward the radiant cut becomes truly extraordinary, and our 4 carat, 5 carat, 7 carat, and 8 carat radiant cut diamond rings represent some of the finest pieces in our collection.

Yellow gold is one of the most popular metal choices for a radiant cut diamond engagement ring — the warm tone of the gold creates a beautiful contrast with the bright white brilliance of the diamond, and the rectangular outline of the radiant cut looks particularly striking against a yellow gold band. Our gold radiant cut engagement rings, radiant cut yellow gold engagement rings, and radiant cut engagement rings gold collections are available in 14k and 18k across every setting. Rose gold radiant cut engagement rings offer a softer romantic warmth. White gold delivers a clean, modern setting that maximises the diamond's brightness. Platinum is the premium choice — the most durable metal, naturally white, and the standard for the finest radiant cut diamond rings in the world.

Lab grown radiant cut diamond engagement rings deliver certified radiant cut diamond quality — the same carbon crystal structure, the same full brilliant facet pattern, the same IGI and GIA grading standards — at typically 50-70% less than a natural radiant cut diamond of equivalent quality. For buyers who want a larger or higher-quality radiant cut diamond, lab grown makes a 3 or 4 carat stone achievable at a price point that natural diamonds simply cannot match. Our lab grown radiant cut engagement rings, lab grown radiant diamond ring, and radiant cut lab grown diamond ring collection spans every setting and metal alongside our natural diamond range.

A radiant cut moissanite engagement ring delivers the radiant cut's distinctive rectangular brilliance with moissanite's exceptional fire — a higher refractive index than diamond that produces even more colourful sparkle distributed across the rectangular facet pattern. Our radiant cut moissanite ring, radiant moissanite ring, and radiant cut moissanite engagement ring collection spans every setting style and metal. For buyers who want a larger radiant cut stone without the cost of a natural diamond, radiant moissanite offers outstanding value and a genuinely beautiful ring.

Pairing the right wedding band with a radiant cut engagement ring requires a little care — the rectangular profile of the radiant sits slightly differently on the finger than a round or oval stone, and the best wedding band choice depends on the specific setting height and band width of your engagement ring. A plain straight band works cleanly with most radiant cut solitaire settings. A curved or contoured band nests more closely alongside settings with higher profiles. Our best wedding band for radiant cut engagement ring guide, and our radiant engagement ring with wedding band and radiant cut engagement ring with wedding band matched bridal sets, are designed to take the guesswork out of this decision.

Vintage radiant cut engagement rings bring Art Deco-influenced geometric precision to one of the most brilliant diamond cuts available. The rectangular outline of the radiant cut echoes the architectural geometry of 1920s jewellery design naturally, making vintage radiant cut rings feel both historically grounded and completely contemporary. Our vintage radiant cut engagement rings collection includes Art Deco-inspired settings with milgrain detailing, filigree metalwork, and geometric band profiles.
For buyers who want something genuinely unique — a radiant cut with an unusual band profile, a radiant with coloured gemstone accents, a split shank radiant cut engagement ring, or a custom radiant design built from scratch — our bespoke service creates entirely original radiant cut rings around your specific vision.

A radiant cut diamond is a rectangular or square diamond cut featuring a full brilliant-cut facet pattern on both the crown and the pavilion. It was developed in the late 1970s by master diamond cutter Henry Grossbard, who wanted to combine the elegant rectangular silhouette of an emerald cut with the fire and brilliance of a round brilliant. The result was the first rectangular cut to achieve the light performance levels of a round diamond.
RADIANT CUT vs EMERALD CUT: Both are rectangular diamonds, but the cuts are fundamentally different. An emerald cut uses step-cut facets — long, flat facets that create a hall-of-mirrors clarity effect and showcase a diamond's internal character. A radiant cut uses brilliant-cut facets — triangular and kite-shaped facets that create fire and sparkle. An emerald cut is about depth and clarity; a radiant cut is about brilliance and scintillation.
RADIANT CUT vs CUSHION CUT: Both deliver brilliant-cut fire in a non-circular outline. A cushion cut has softly rounded corners; a radiant cut has cropped but more defined corners. The radiant cut tends to deliver more uniformly distributed sparkle across its face; the cushion cut often creates a slightly more concentrated sparkle pattern. Both proportions — square and elongated — are available in each shape.
ELONGATED vs SQUARE RADIANT: A square radiant cut has roughly equal length and width, typically a ratio of 1:1 to 1:05. An elongated radiant cut has a noticeably longer profile, typically 1:25 to 1:4 length-to-width ratio, and creates more finger coverage and a more dramatic visual impact on the hand.
RADIANT CUT SETTINGS: The radiant cut's cropped corners make it one of the most versatile shapes for settings — the corners are less vulnerable than those of a marquise or princess cut, and the stone sits securely in both prong and bezel configurations.