Round Cut Lab Diamond Engagement Rings
Round lab-grown diamond engagement rings have a balanced, timeless outline, with brilliant-style facets that catch the light from many angles. Explore round centres in classic solitaires, hidden halos and diamond-set shoulders, framed by platinum or gold. The diamond's diameter and cut proportions shape its appearance, while fine claws or a more decorative setting give the finished ring a distinct personality.

EDEN
Round Lab Diamond 18k White Gold Vine Solitaire

LOTTIE
Round Lab Diamond 4 Claw Solitaire 18k Rose Gold

LOTTIE
Round Lab Diamond 4 Claw Solitaire 18k White Gold

LILLIE
Round Lab Diamond 18k Rose Gold Knife Edge Solitaire

LILLIE
Round Lab Diamond 18K White Gold 6 Prong Knife Edge Solitaire Ring

JULIET
Round Lab Diamond 18k Rose Gold Solitaire Ring

JULIET
Round Lab Diamond 18k Yellow Gold Solitaire Ring

JULIET
Round Lab Diamond 18k White Gold Solitaire Ring

JULIET
Round Lab Diamond 950 Platinum Solitaire Ring
Choosing a Round Lab Diamond Engagement Ring
Round lab grown diamond engagement rings offer a familiar, balanced centre with a lively brilliant-style sparkle. The shape works with a wide range of settings, but the quality of the individual diamond's cut still matters more than a general description of the cut.
Compare light and proportions
Look at face-up diameter, depth and the stone's appearance in different lighting. A grading report gives helpful measurements, although it should be considered alongside images of the actual diamond. Two round diamonds with the same weight may present differently depending on their proportions.
Check how the round brilliant sits in the ring
A carefully cut round diamond can appear lively in many settings, but a high basket, delicate claws and broad band each create a different visual result. Pay attention to the stone's face-up measurements and how the shoulders lead towards it. If you prefer a classic six-claw outline, compare it with four claws from both above and the side. The final ring should feel proportionate, not simply bright.
A lab diamond solitaire ring keeps the round centre stone in focus, while a halo adds a visible diamond frame and shoulder-set stones extend sparkle along the band. If you prefer a finer overall silhouette, compare petite lab diamond engagement rings. Consider the basket height and claw arrangement if you plan to wear a wedding ring alongside. For a broader comparison of centre stones, browse our round engagement rings. Our consultants can explain the terminology on your laboratory report.
2026 Award Nominations
Award Winning Jeweller
We’re proud to be recognised consistently by the UK jewellery industry’s leading awards programmes. In 2026, Lily Arkwright has been shortlisted for Branded Boutique of the Year at the Professional Jeweller Awards and Bridal Jewellery Retailer of the Year at the UK Jewellery Awards, reflecting our continued commitment to exceptional customer service, product innovation, and ethical craftsmanship.
These latest nominations build on previous industry recognition, including being shortlisted for Bridal Jewellery Retailer of the Year at the 2025 UK Jewellery Awards and Independent Retailer of the Year at the Professional Jeweller Awards 2025. We were also finalists for Retail Team of the Year at both the Retail Jeweller Awards and Professional Jeweller Awards in 2024, recognising the passion, expertise, and dedication of our team.
We’re honoured to be recognised for helping thousands of couples find the perfect engagement rings and wedding rings, with a strong focus on choice, transparency, and personalisation. As an award-winning jeweller, we remain committed to delivering exceptional service, exceptional craftsmanship, and responsibly sourced lab-grown diamonds, moissanite, and natural diamonds, ensuring every customer can find a ring that perfectly reflects their love story.
EXPERT, QUALIFIED ADVICE
Expert Lab-Grown Diamond Ring Advice
Compare lab-grown diamond cuts, clarity, colour and proportions with help from our jewellery consultants. Our team includes JET-qualified specialists and colleagues following the National Association of Jewellers' training pathway, offering practical guidance on grading reports and the settings that suit different diamond shapes.
Visit our Manchester or London showroom to compare designs, or arrange a virtual consultation.

























































































