Round lab-grown diamond engagement rings: the round brilliant is the classic lab-grown diamond shape, cut to return the most light and sparkle. Made to order in solid 14kt and 18kt gold, in white, yellow or rose, never 9ct.
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✓ Made to your size · find your ring size
19 products
19 products
Choosing a round lab-grown diamond engagement ring
Why choose a round brilliant
A round brilliant suits every hand and every setting, and it never dates. Its facets are designed for maximum brilliance, so even a modest carat weight looks bright and lively.
Solitaire, halo or trilogy
A round solitaire is the classic engagement ring, available here with cathedral, crossover, swirl and grooved bands. A halo surrounds the centre lab-grown diamond for extra presence, and a trilogy ring sets lab-grown diamonds either side.
Lab-grown diamond quality you can check
Every stone we set is a lab-grown diamond, D–F in colour and VS1 clarity or better. Rings with a centre stone of 1.00ct or above come with an individual IGI grading report as standard, at no extra cost.
Size and timing
Every ring is made to your size at no extra cost, including half sizes; use our ring size guide. Rings are made to order in around four weeks, including UK hallmarking where required, and UK delivery is free, tracked and signed for. Browse all our engagement rings.
Your questions
How do lab-grown diamonds compare with mined diamonds? They have the same chemical composition, hardness and sparkle as mined diamonds; only their origin differs.
Can you make a design that isn’t shown here? Yes. Start on our custom jewellery page and we will design it with you.