Radiant Cut Lab-Grown Diamond Bridal Set Engagement Rings Under £4,500

Lab-grown diamonds are chemically, physically, and optically identical to mined diamonds. They have the same crystal structure, hardness (10 on the Mohs scale), refractive index, and thermal conductivity. The only difference is their origin — grown in a controlled laboratory environment in 6–10 weeks rather than formed over billions of years. Lab-grown diamonds are typically 60–80% less expensive than equivalent natural diamonds, allowing you to choose a larger, higher-quality stone within your budget.

The radiant cut combines the elegant shape of an emerald with the brilliant-cut faceting of a round, producing exceptional fire in a rectangular or square silhouette. Its cropped corners give it a distinctive look that is both modern and versatile, while its faceting pattern hides inclusions well.

At £4,500, you can choose a 1ct natural diamond engagement ring in most settings, or a 2ct lab-grown diamond for maximum visual impact. This price point offers genuine luxury without compromise.

Bridal Set rings with a 1ct lab-grown diamond start above £4,500

At 1ct, even lab-grown bridal set rings start above £4,500.

Need help finding the perfect ring? Book a free consultation — our experts can work with any budget.

Pricing Guide

Radiant Diamond Price Guide

Radiant diamond prices updated daily. Book a free consultation to see diamonds in person at our Hatton Garden atelier.

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Radiant cut engagement rings are a flawless combination of rectangular elegance with softened edges and brilliant-cut sparkle. A hybrid diamond shape, the radiant cut is a clever fusion of the step cut of the emerald and the brilliant cut of the round — delivering exceptional fire from every angle.

From solitaire to side stone settings, discover our radiant cut designs or create your own through our ring builder in 18kt white, yellow, or rose gold, or platinum.

Radiant Cut Lab-Grown Diamond Bridal Set Engagement Rings Under £4,500 — FAQs

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