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.

What natural diamond engagement ring can I get for £4,000?

At MOH, under £4,000 you can choose a 0.7ct–1ct natural diamond engagement ring depending on shape and setting style. Solitaire settings offer the best value, while halo and side-stone styles add visual impact.

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.

What natural diamond engagement ring can I get for £4,000?

At MOH, under £4,000 you can choose a 0.7ct–1ct natural diamond engagement ring depending on shape and setting style. Solitaire settings offer the best value, while halo and side-stone styles add visual impact.

Round Brilliant Engagement Rings Under £4,000

385 handcrafted designs · 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.

Under £4,000, natural diamond engagement rings become a strong option — 0.7ct to 1ct stones in classic solitaire or elegant halo settings. Lab-grown opens the door to 1.5ct–2ct showpieces.