Radiant Cut Lab Grown Diamond Engagement Rings

The radiant cut occupies a distinctive space in diamond design — it combines the clean, rectangular outline of an emerald cut with the intense brilliance of a round. Its cropped corners and densely arranged facets produce a diamond that sparkles with real intensity while maintaining a structured, geometric silhouette. For those who want both architectural shape and maximum light performance, the radiant cut delivers on both.

At The Jewel Concierge, every radiant cut lab grown diamond engagement ring is crafted to order in your choice of 14k or 18k yellow gold, white gold, rose gold, or platinum. Each ring begins with a certified lab grown diamond, selected for exceptional cut, colour, and clarity — then set into a design that works with the shape's bold, confident character.

The radiant cut's trimmed corners give it a softer edge than a true rectangular shape, making it comfortable to wear and less prone to catching. Its facet pattern — a variation of the brilliant cut applied to a rectangular form — means it handles light with far more energy than a step-cut diamond like the emerald. The result is a stone that feels modern, decisive, and full of movement.

Our radiant cut collection includes solitaire, halo, cathedral, and bezel settings, among others. You can also choose from a range of intricate design elements to further customise your ring — such as adding a hidden halo, a pavé bridge, a pavé band, and more. The radiant's versatility means it sits comfortably across both minimal and more detailed design styles.

Every piece arrives with a lifetime warranty, complimentary ring resizing, complimentary engraving, and complimentary express insured shipping. If you would like guidance choosing the right radiant cut diamond or setting, our team is here — book a virtual consultation or begin your bespoke journey to design something entirely your own.

Explore our full range of lab grown diamond engagement rings or read our guide to the 4Cs of lab grown diamonds.

Frequently Asked Questions

What makes the radiant cut different from an emerald cut?

Both shapes share a rectangular outline, but the way they handle light is fundamentally different. The emerald cut uses long, stepped facets that produce broad, mirror-like flashes — quiet and refined. The radiant cut uses brilliant-style facets arranged in a more complex pattern, producing intense sparkle and fire closer to what you would see in a round brilliant. The radiant also features cropped corners, giving it a slightly softer edge than the emerald's sharp right angles.

Does the radiant cut come in different proportions?

Yes. Radiant cut diamonds are available in near-square proportions as well as more elongated rectangular profiles. A squarer radiant has a compact, centred presence on the finger, while an elongated radiant creates a more streamlined, finger-flattering silhouette. Both deliver the same brilliant-style sparkle — the choice comes down to the proportion and aesthetic you prefer.

What settings are available for radiant cut engagement rings at The Jewel Concierge?

Our radiant cut engagement rings are available in solitaire, halo, cathedral, and bezel settings, among others. You can also choose from a range of intricate design elements to further customise your ring — such as adding a hidden halo, a pavé bridge, a pavé band, and more. Each ring is crafted to order in 14k or 18k yellow gold, white gold, rose gold, or platinum.

Can I design a custom radiant cut engagement ring?

Absolutely. Our Bespoke Journey begins with a conversation — we take the time to understand your vision, preferences, and priorities, whether you have a clear idea or are still exploring. From there, we refine the design direction together and help you select a diamond that suits your brief. Once the design is finalised, we create a detailed CAD model for you to review and approve before crafting begins. The entire process typically takes six to eight weeks from design approval, at no additional cost. You can start by filling out our Bespoke Journey order form.