Skip to main content

Oval Cut Diamond

The oval cut diamond has surged in popularity in recent years, becoming one of the most sought-after shapes for engagement rings. Its elongated silhouette creates the illusion of greater size, while its brilliant-cut facet pattern delivers exceptional sparkle.

Quick Facts

Facets

56 to 58 facets in a modified brilliant pattern

Length-to-Width Ratio

1.30 to 1.50 is most popular. 1.35 to 1.45 is considered the classic oval proportion. Wider ovals (1.20-1.30) appear more rounded, while narrower ovals (1.50+) appear more elongated.

Brilliance

Very high — comparable to round brilliant in terms of light return and fire. The best ovals rival rounds for sparkle.

Best For

Engagement rings where a larger-looking stone is desired, solitaire and halo settings, and elongating the appearance of shorter fingers.

What is a Oval Cut Diamond?

The oval cut is a modified brilliant cut, meaning it uses the same faceting principles as a round brilliant but in an elongated shape. It was created by Lazare Kaplan in 1957 and typically features 56 to 58 facets. The oval's elongated shape makes fingers appear longer and more slender, which is a major part of its appeal. When well-cut, an oval diamond can appear up to 10% larger than a round brilliant of the same carat weight due to its larger face-up surface area.

History

Lazare Kaplan, a renowned Russian-born diamond cutter, invented the modern oval cut in 1957. Kaplan was already famous for his expertise in cleaving large, difficult diamonds and was inducted into the Jewelers International Hall of Fame. The oval cut gained mainstream popularity in the 2010s and has become particularly fashionable on social media, favoured by celebrities and influencers. Its modern resurgence is partly driven by the desire for shapes that look larger per carat while still offering brilliant-cut sparkle.

Pros & Cons

Pros

Appears larger than a round diamond of the same carat weight due to elongated shape
Excellent brilliance and fire — modified brilliant cutting delivers impressive sparkle
Flattering on the hand, creating the illusion of longer, more slender fingers
Typically 10-25% less expensive than an equivalent round brilliant
Highly versatile in different ring settings

Cons

Can display a "bow-tie" effect — a dark shadow across the centre visible in some stones
No standardised cut grade from GIA, so visual inspection or expert guidance is important
Quality varies significantly — proportions matter more than with rounds
Very popular currently, which some buyers may see as trendy rather than timeless

Buying Tips

The most important thing when buying an oval diamond is to see the stone (or high-quality imagery) to assess the bow-tie effect. A slight bow-tie is normal and acceptable, but a strong, dark bow-tie significantly reduces beauty. Look for stones with a length-to-width ratio between 1.35 and 1.50 for a classic look. Prioritise symmetry — the two halves should mirror each other perfectly. With lab-grown ovals, you can often achieve a much larger carat weight for the same budget.

Recommended Settings

Oval diamonds look stunning in solitaire settings with a thin band that emphasises the stone's shape. A hidden halo adds sparkle without visually altering the shape. East-west settings, where the oval sits horizontally, offer a contemporary alternative. Three-stone settings with pear-shaped side stones complement the oval's curves beautifully. Bezel settings provide a sleek, modern frame.

The oval has become the most popular non-round shape for engagement rings, particularly among buyers aged 25-35. It appeals to those who want maximum visual impact for their budget and a shape that feels both modern and elegant.