Cushion Cut Lab-Grown Diamond Three Stone Engagement Rings in Platinum Under £2,500

Cushion cuts are naturally well-suited to lab-grown diamonds. Their larger facets and vintage character create romantic light play, and the lab-grown price advantage lets you choose a higher carat weight to maximise the cushion's signature charm.

The cushion cut features softly rounded corners and larger facets that produce broad flashes of light rather than the pinpoint sparkle of a round brilliant. Its pillow-like shape evokes romance and vintage elegance, making it a favourite for those who appreciate character over pure brilliance. Available in square and elongated proportions.

The purest choice for a lifetime of wear. Platinum is 95% pure, naturally white, and will never fade or yellow over time. It is denser and heavier than gold, giving your ring a satisfying weight and substance. Platinum is hypoallergenic, making it ideal for sensitive skin.

Under £2,500, a 1ct lab-grown diamond engagement ring in platinum or 18K gold is well within reach — with budget left over for a more intricate setting style such as halo or side stone.

Lab-grown cushion cuts are typically 15–25% less than equivalent lab-grown rounds, doubling the value proposition.

Three Stone rings with a 1ct lab-grown diamond start from £3,064

At 1ct, even lab-grown three stone rings start above £2,500.

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

Pricing Guide

Cushion Diamond Price Guide

0.50ct

Ring from

£3,094

0.70ct

Ring from

£3,048

1ct

Ring from

£3,073

1.50ct

Ring from

£3,225

2ct

Ring from

£3,394

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

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Cushion cut engagement rings feature a softened square silhouette with rounded corners, combining the brilliance of modern diamond cutting with a romantic, antique feel. Their gentle, pillow-like shape has seen a resurgence in popularity, offering a distinctive alternative to the traditional round.

Discover our selection of cushion cut designs or create your own through our ring builder. Available in solitaire, halo, and vintage settings in 18kt white, yellow, or rose gold, or platinum.

Cushion Cut Lab-Grown Diamond Three Stone Engagement Rings in Platinum Under £2,500 — FAQs

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