Oval vs Elongated Cushion Diamonds: Which Shape Suits You?

What is the difference between an oval and an elongated cushion diamond?

An oval is a brilliant-cut diamond with an elliptical outline: two gently curved long sides and two rounded ends, with no corners at all. An elongated cushion is a cushion cut stretched into a rectangle. It keeps the cushion's soft, rounded corners and slightly bowed sides, but its length is clearly greater than its width. Both are fancy shapes (any diamond shape other than round), and both belong to the wider family of elongated cuts alongside pears, marquises and movals.

The quickest way to tell them apart is to look at the ends. An oval's ends are smooth, continuous arcs. A cushion's ends are flatter, with four rounded corners you can pick out even from a metre away. The faceting differs too. Most ovals carry about 56–58 facets in a brilliant pattern, while cushions range from roughly 58 to well over 60 facets and come in two distinct styles, chunky and crushed ice, explained below. The material is the same in both: diamond, 10 on the Mohs hardness scale, with a refractive index of about 2.42.

If you are still narrowing down shapes in general, our overview of every diamond shape is a good starting point, and any unfamiliar term on this page is explained in our plain-English jewellery glossary.

Oval vs elongated cushion: how do they look on the hand?

On the finger, an oval reads as one long, unbroken curve. That continuous line draws the eye along the finger, which is why ovals have a reputation for making hands look longer and slimmer. At the classic ratio of about 1.35–1.45 the effect is clear without the stone looking narrow.

An elongated cushion looks softer and squarer at the ends, a little like a plump pillow. At a ratio of 1.20 it is only modestly longer than it is wide, so it lengthens the finger less than an oval and has more presence across the hand. At 1.35 or more it gives a similar lengthening effect, but its fuller corners make it look broader and more architectural. Many people describe the cushion as the more vintage of the two, because the shape descends from old mine cuts of the 18th and 19th centuries, while the oval reads as cleaner and more contemporary.

• Most finger-lengthening: an oval at 1.40–1.50.
• Most coverage across the finger: an elongated cushion at 1.15–1.25.
• Most vintage feel: a chunky elongated cushion, ideally in a claw or milgrain setting.
• Most modern feel: an oval in a thin solitaire band or set east-west (sideways across the finger).

The two shapes can also meet in the middle. The shoulders of an oval are the curved areas either side of each end, and some ovals are cut with fuller, squarer shoulders that start to look cushion-like. Our guide to rounded versus boxy oval shoulders shows the difference. For complete ring ideas, see these oval engagement ring styles.

Which looks bigger per carat, an oval or an elongated cushion?

Carat is weight, not size. What you actually see is the face-up size: the outline when you look straight down at the stone. Ovals are usually cut fairly shallow, so more of their weight spreads across the top. Cushions are usually cut deeper, with more weight held in the pavilion (the lower, cone-shaped part of the stone), so the same carat weight shows a smaller outline.

Length is where the difference shows most: a 1 carat oval is typically about a millimetre longer than a 1 carat elongated cushion. The gap in total face-up area is smaller than that suggests, because a cushion's corners fill out more of its outline than an oval's rounded ends do. In practice a well-cut oval usually shows roughly 5–10% more surface area than an elongated cushion of the same weight, and it looks noticeably longer on the hand.

These are typical figures only. Two stones of the same weight and shape can differ by half a millimetre or more depending on depth. Some ovals are cut with a deep, heavy belly that adds weight without adding size, which is explained in why some ovals hide weight in a deep belly. If face-up size is your main priority, our page on how an oval compares with a round shows how much further an oval spreads than the round brilliant too.

Which sparkles more, an oval or a cushion?

They sparkle differently rather than one simply sparkling more. An oval uses a brilliant facet pattern adapted from the round, giving a bright, even mix of white light (brilliance) and coloured flashes (fire). Its weakness is the bow-tie effect: a dark band across the middle where light leaks out instead of returning to your eye. Almost every oval has some bow-tie. A faint one that shifts as the stone moves adds contrast; a dark one that stays put in every position means poor proportions.

Cushions come in two faceting styles, and grading reports name them. A cushion brilliant has larger facets that produce broad, chunky flashes of light, similar to an antique cushion. A cushion modified brilliant adds an extra row of facets on the pavilion, breaking the light into many small points, a look the trade calls crushed ice. Many elongated cushions on the market, especially lab-grown ones, are crushed ice. Elongated cushions can show a bow-tie as well, though it is usually softer than in an oval.

Our guide to cushion brilliant and modified cushion faceting goes deeper into telling the two cushion styles apart from photos. One thing worth knowing: GIA does not give ovals or cushions an overall cut grade, only polish and symmetry grades. You have to judge the light performance yourself, from video or in person.

What length-to-width ratio should you look for in each shape?

The length-to-width ratio is the stone's length divided by its width, both taken from the grading report. It decides how long and slim each shape looks, and the comfortable ranges are different for the two shapes.

Most people choose an oval between 1.35 and 1.50; our page on choosing an oval ratio shows each step side by side. For cushions, anything below about 1.10 is generally treated as square, and the elongated look starts to show from about 1.15. Square and elongated cushions compared explains where that line falls, and our elongated cushion cut guide covers proportions in more detail.

Do colour and clarity choices differ for oval and cushion diamonds?

Yes. Cushions tend to hold and show body colour more than ovals, because they are cut deeper and, in crushed-ice stones, the many small facets blend any warmth through the whole stone. An oval tends to show any tint mainly at its two ends, where the stone is thinner. In white gold or platinum, most people are happy with an oval from about H colour, while for a cushion many prefer G or better. In yellow or rose gold, I or J can look white in either shape because the metal warms everything around it.

For clarity, the goal is an eye-clean stone, meaning no inclusions (internal features) visible without magnification at a normal viewing distance. Brilliant ovals and crushed-ice cushions both hide small inclusions well, so VS2 or a carefully chosen SI1 often works. A chunky cushion brilliant has larger, open facets that act like windows, so inclusions are easier to see; VS2 or better is the safer choice there.

• Oval in white metal: G–H colour, VS2–SI1 eye-clean.
• Elongated cushion in white metal: F–G colour, VS2–SI1 for crushed ice, VS2 or better for chunky.
• Either shape in yellow or rose gold: I–J colour can look white.
• Check: the plotting diagram on the report, which maps where each inclusion sits.

Which is more durable, and what settings suit each shape?

Both shapes are good for everyday wear because neither has a sharp point, unlike a pear, heart or marquise. The cushion's rounded corners are usually fairly thick at the girdle (the thin outer edge where the top and bottom of the stone meet), so they handle knocks well. An oval has no corners at all, though its two ends sit furthest out and take the most bumps. With either shape, avoid a girdle graded extremely thin, and have the claws checked every year or so.

• Four claws: on a cushion, one at each corner; on an oval, usually placed at the shoulders. Double claws add security and a vintage look.
• Six claws: common on ovals; more security and a rounder look, with slightly more metal on show.
• Bezel: a thin rim of metal around the edge. Very secure, and it suits the smooth outline of an oval particularly well.
• Halo: a frame of small diamonds. Cushion halos are a classic vintage style; a hidden halo under the stone suits either shape.
• East-west: the stone set sideways across the finger, which works for both and suits stacking.
• Three-stone: side stones either side of the centre; tapered baguettes suit an elongated cushion's straighter lines.

For worked examples of claw positions, bezels and halos on long stones, see settings that suit long shapes.

Oval vs elongated cushion diamond price: which costs more?

Both shapes are cut from natural and laboratory-grown diamond, and the two look identical to the eye. Lab-grown diamonds are real diamond with the same hardness and refractive index, grown in a laboratory rather than mined; they cost much less than natural. Natural diamonds are rarer. Either way, look for an independent grading report from a lab such as GIA or IGI.

These are broad ranges only; prices move with the market and the exact grades. As a pattern, cushions tend to cost a little less per carat than ovals of the same weight and grades, partly because ovals are in higher demand and partly because a cushion keeps more of the rough crystal. Remember the size trade-off, though: because a cushion faces up smaller, matching an oval's face-up size can mean buying a slightly heavier cushion, which narrows or cancels the saving.

Should you choose an oval or an elongated cushion?

Neither shape is better overall. The right one depends on what you notice first when you look at a ring.

• Choose an oval if you want the most face-up size for the weight, a long, finger-lengthening line, bright even sparkle and a clean modern look, and you are happy to check carefully for bow-tie.
• Choose an elongated cushion if you like soft corners and a vintage feel, want more coverage across the finger, prefer broad flashes or a crushed-ice glitter, and are happy with a slightly smaller outline for the weight.
• Either works if durability is your main concern: neither has a point to protect.

If neither feels quite right, there are close relatives worth comparing. A pear keeps the oval's curve at one end; see oval against pear. For a newer shape between marquise and oval, read the moval as an oval alternative. If you like the cushion's rectangle but want sharper corners and more sparkle, the elongated radiant cut is the next step, and for a clean, step-cut look see elongated emerald cuts. Everything else about ovals is covered in our complete oval diamond guide.

How do you compare an oval and an elongated cushion? Step by step

1. Set your weight and budget. Decide on a carat range, and whether you are looking at natural or lab-grown, before comparing shapes.
2. Compare millimetres, not carats. Note the length and width of each stone from the report; expect the oval to be roughly a millimetre longer at 1 carat.
3. Work out the ratios. Divide length by width: about 1.35–1.50 for a classic oval, about 1.15–1.35 for an elongated cushion.
4. Check the faceting style. For cushions, see whether the report says cushion brilliant (chunky) or cushion modified brilliant (often crushed ice).
5. Watch both in video. Look for a bow-tie that stays dark in the oval and a grey, slushy centre in the cushion.
6. Match colour to metal. Allow about one grade higher for the cushion in white metal.
7. Try the outline on your hand. Hold printed outlines or ring samples of each shape at the actual size to see which you prefer.