Carolina
£2,381
Round Brilliant Lab-Grown Diamond Halo Engagement Rings in Platinum Under £2,500
18 handcrafted designs · Hatton Garden, London
A lab-grown round brilliant offers the most popular diamond shape at the most competitive price point. With 60–80% savings over natural equivalents, many couples choose to upgrade to an Excellent cut grade — where the round brilliant truly shines.
The round brilliant cut features 58 precisely arranged facets mathematically optimised to maximise light return, fire, and scintillation. Accounting for over 60% of all engagement rings sold worldwide, the round brilliant is the most researched and refined diamond shape in existence. Its symmetrical silhouette offers unmatched sparkle from every angle.
18 results
Round Brilliant Lab-Grown Diamond Halo Engagement Rings in Platinum Under £2,500 — FAQs
Expert Knowledge
Guides & Education
Our expert guides help you make informed decisions with confidence.
Understand the 4Cs, shapes, and certification — everything you need to choose with confidence.
Read GuideStyles, settings, and how to find the ring that tells your story.
Read GuideWhat to expect at every price point — from £500 to £10,000+.
Read GuideThe complete comparison — properties, pricing, and which is right for you.
Read GuidePlatinum, white gold, yellow gold, rose gold — properties, care, and pricing.
Read GuidePractical tips, ring sizing, and what to look for when buying online.
Read GuideExplore
Continue Browsing
By Shape
More Collections
Stay Connected
Be the First to Know
New collections, exclusive offers and jewellery inspiration from Hatton Garden.