Oval lab-grown diamond engagement rings: an elegant, elongated shape that looks larger on the finger than a round lab-grown diamond of the same carat weight. Made to order in solid 14kt and 18kt gold, in white, yellow or rose, never 9ct.
✓ Made to order · 12-month repair guarantee
✓ Secure checkout · free tracked, signed-for UK delivery
✓ 14-day returns on standard pieces, and faulty pieces always covered · Returns & Refunds
✓ Read our reviews on Trustpilot
✓ Made to your size · find your ring size
7 products
7 products
Choosing an oval lab-grown diamond engagement ring
Why choose an oval
An oval lab-grown diamond has the brilliance of a round cut in a longer outline. It draws the eye along the finger, which many people find flattering, and it carries more visible surface for its carat weight than most other shapes.
Solitaire, halo or accents
A plain oval solitaire keeps the focus on the centre stone. A halo frames it with smaller lab-grown diamonds for extra brightness, while round or marquise accents on the band add sparkle either side. Compare more styles in our halo rings and solitaire rings.
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.