Why are round diamond engagement rings more expensive than other shapes?

Round diamonds command a premium because approximately 50% of the rough stone is lost during cutting to achieve optimal light performance. This higher material waste, combined with overwhelming demand, makes round brilliants the most expensive shape per carat.

What is the ideal carat size for a round diamond engagement ring?

The most popular carat weight for round diamond engagement rings is 1.0ct, which measures approximately 6.5mm in diameter. For maximum value, consider 0.90–0.99ct stones — they appear virtually identical to 1ct but can cost 10–15% less.

Can I get a 1ct natural diamond engagement ring for under £4,500?

Yes — at MOH, a 1ct natural diamond solitaire in 18K gold is achievable under £4,500, depending on shape. Cushion and emerald-cut natural diamonds offer excellent value. Our Hatton Garden experts can guide you to the best stone for your budget.

Why are round diamond engagement rings more expensive than other shapes?

Round diamonds command a premium because approximately 50% of the rough stone is lost during cutting to achieve optimal light performance. This higher material waste, combined with overwhelming demand, makes round brilliants the most expensive shape per carat.

What is the ideal carat size for a round diamond engagement ring?

The most popular carat weight for round diamond engagement rings is 1.0ct, which measures approximately 6.5mm in diameter. For maximum value, consider 0.90–0.99ct stones — they appear virtually identical to 1ct but can cost 10–15% less.

Can I get a 1ct natural diamond engagement ring for under £4,500?

Yes — at MOH, a 1ct natural diamond solitaire in 18K gold is achievable under £4,500, depending on shape. Cushion and emerald-cut natural diamonds offer excellent value. Our Hatton Garden experts can guide you to the best stone for your budget.

Round Brilliant Engagement Rings Under £4,500

Handcrafted · Hatton Garden, London

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.

At £4,500, you can choose a 1ct natural diamond engagement ring in most settings, or a 2ct lab-grown diamond for maximum visual impact. This price point offers genuine luxury without compromise.