The Round Cut vs. Cushion Cut Diamond

Round cut and cushion cut diamonds are the two most popular shapes for engagement rings in 2026, and the choice between them comes down to four things: style, sparkle, size, and price. Round cut diamonds give you maximum brilliance and a timeless silhouette. Cushion cuts offer a softer, vintage-inspired sparkle and typically cost 20% to 30% less at the same carat weight.

So what are the real differences? The quick answer: Round cut diamonds sparkle more, hide color and flaws better, and cost the most of any diamond shape. Cushion cut diamonds have softer, vintage-style sparkle, look slightly larger from the top, and cost less than round cuts at the same carat weight. Round suits classic taste; cushion suits romantic, vintage taste.

Round Cut vs. Cushion Cut at a Glance

Feature	Round Cut Diamond	Cushion Cut Diamond
Shape	Perfect circle	Soft square with rounded corners
Facets	57 to 58 standard	58 (chunky) or more (crushed ice)
Sparkle	Highest brilliance of any shape	Softer, broader flashes with more fire
Size on finger	True to carat weight	Looks slightly larger from above
Price (same carat and quality)	Most expensive shape	20% to 30% less than round
Hides color	Yes, I to J grade can look white	Less so, choose G to H
Hides flaws	Yes, SI1 is often eye-clean	Less so, choose VS2 or higher
Style vibe	Classic and timeless	Vintage and romantic

Which Has the Better Style: Round or Cushion?

Round diamonds read as classic and traditional, while cushion cut diamonds carry a romantic, vintage feel rooted in their old mine cut origins.

Round diamonds are the most popular shape for engagement rings and many other types of fine jewelry. Around half of all diamonds sold today are round brilliant diamonds. They have a clean, instantly recognizable silhouette that pairs beautifully with any setting style.

Cushion cut diamonds are a modified version of an antique shape called the old mine cut. They look like a square with cut corners (or a "cushion"), but they feature modern brilliant cut faceting. Because cushion cuts evolved from this antique shape, they're thought of as a vintage style with a romantic, heirloom feel.

Cushion cuts also look very different than other rectangular or square shapes. Emerald cut diamonds have a retro, old-Hollywood feel. Asscher cut diamonds have an Art Deco look. Princess and radiant cuts read modern. Cushion sits in its own category: softly antique, romantic, never decade-specific.

There's no "best" style here. If you want a timeless look, go with a round. If you love the romantic, vintage feel of the cushion shape, go with a cushion.

Which Has More Sparkle, Round or Cushion?

Round diamonds have the highest overall sparkle of any diamond shape, while cushion cuts produce softer, broader flashes of light with more fire.

When a diamond catches light, it reflects and refracts that light, then emits it. The total sparkle is called scintillation, and it's made of two types of light: white light (called brilliance) and rainbow light (called fire). Round diamonds have the most brilliance of any shape because their 57 to 58 facets are arranged for optimal light return. Cushion cuts are still brilliant, but they have larger facets, which produce broader, chunkier flashes and a higher proportion of fire.

One quality to watch out for in cushion cuts: the bow-tie effect. Some cushion cut diamonds tend to show a dark area across the center of the stone, shaped like a black bow-tie, where light escapes through the bottom instead of bouncing back. A faint bow-tie is normal, but a pronounced one will dim the entire diamond. Always view a cushion cut from above under different lighting before you buy.

Many people love the soft glow of a cushion cut. Others prefer the high overall brilliance of a round. Like style, sparkle preference is personal.

Does a Cushion Cut Diamond Look Bigger Than a Round?

 

The short answer? Kind of! A cushion cut diamond can look slightly larger from the top than a round of the same carat weight. Cushion cuts have a slightly larger table (the flat top of the stone) and bigger facets, which can give them a bigger appearance at first glance.

Round diamonds, however, are more brilliant, and that brilliance allows round diamonds to look bigger on our hands. The bright flashes tend to give a diamond ring more of a presence on the hand. The two effects largely cancel out, so a cushion and round of similar quality usually look very close in size on the finger.

To make either shape look as large as possible without going up in carat weight, prioritize cut quality. A round with an Excellent cut grade or a cushion with very good polish, symmetry, and ideal proportions will sparkle brighter, which makes the stone look larger. A halo setting also adds visible size around the center stone, no matter the shape.

What to Look For When Choosing Each Shape

Round cut diamonds only require attention to the 4 Cs, while cushion cut diamonds need a few extra checks: length-to-width ratio, depth percentage, table percentage, and faceting style.

When you shop for any diamond, the 4 C's are your guide: cut, color, clarity, and carat. The 4Cs were created by the GIA and tell you almost everything you need to know about a stone's quality and appearance. For a round, that's the full checklist.

Cushion cuts add four more considerations:

• Length-to-width ratio. A perfectly square cushion has a ratio of 1.00 (up to 1.05 still looks square to the eye). Anything over 1.10 looks noticeably rectangular and are referred to as elongated cushions. Ratio is personal preference, but it's good to know cushions vary.

• Depth percentage. A cushion with too high a depth will sparkle poorly. Aim for 61% to 68%.

• Table percentage. Same idea. Aim for 55% to 65% for a bright, lively stone.

• Faceting style. A cushion with 58 facets has a "chunky antique" look. A "crushed ice" cushion has more, smaller facets and a glittery, ice-like appearance. (The GIA classifies the latter as a "modified cushion cut.") Both are beautiful; pick the one you love the look of.

There's also a color note specific to cushions. Because their larger facets show color more readily, a cushion cut will look slightly more yellow than a round of the same color grade. We generally recommend a cushion in the H grade or higher. For a cushion set in white gold or platinum, go to G or higher to keep the stone looking bright white.

All of these numbers should be available to you to see before you purchase your diamond if the diamond has been graded by a reputable source. This report is important for you to understand and have access to, as it will help you insure your diamond once you purchase it.

How Much More Does a Round Diamond Cost Than a Cushion Cut?

A round cut diamond typically costs 20% to 30% more than a cushion of the same carat weight and quality, and sometimes as much as 50% more for premium stones. But what does that mean? A round brilliant will often run higher in price than a similarly graded, similarly sized cushion cut diamond.

There are two reasons rounds cost more. First, cutting a perfect circle from rough diamond material wastes over half of the raw stone, which raises the per-carat price. Second, rounds are in extremely high demand (about half of all diamonds sold), so suppliers price them at a premium.

A note: these prices reflect naturally mined diamonds. With lab-grown diamonds, the price gap between round and cushion all but disappears. Lab-grown stones are priced more by quality than by shape demand, so you can pick the shape you love without paying a premium for a round. With natural diamonds, cushion is still the more affordable choice.

Cushion cut prices have crept up as the shape gains popularity, but cushion remains one of the better-value diamond shapes available.

Which Should You Choose: Round or Cushion?

If you want to pick the perfect diamond, go with your heart.

Choose a round cut diamond if you want maximum sparkle, a classic and timeless look, and an easier shopping process. Round suits anyone who loves traditional engagement rings and prefers a stone that is more forgiving of slight color and clarity imperfections.

Choose a cushion cut diamond if you want vintage character, better value, or a slightly wider face-up size. Cushion suits romantic, antique styles, halo settings, and active lifestyles (those soft, rounded corners are less prone to chipping than sharp-cornered cuts).

Both shapes look beautiful in solitaire, halo, three-stone, and side-stone settings. If you're torn, halo settings especially flatter cushions, while rounds steal the show in solitaire bands.

Our Advice

The shape you love most is the right one.

Your choice between these two shapes mostly depends on personal preference. Many couples are swayed by the affordability of cushion cuts, but it shouldn't be the only factor at play. If you love the look of both shapes but want a more affordable diamond, cushion is a wonderful option.

If you know in your heart you prefer rounds, don't be talked out of it by price alone. A diamond is a piece you'll wear and enjoy for a lifetime.

 

Still deciding? The Frank Jewelers family has been helping couples pick the perfect diamond for over 80 years, and our guests tell us the in-person comparison makes the choice easy. Stop by our Freeport showroom or book a free consultation to see round and cushion cut diamonds side by side, or to start designing a custom ring around the stone you love.

 

Frequently Asked Questions

Is cushion or round better for an engagement ring?

Neither shape is "better." Round cuts give you maximum brilliance and a timeless silhouette, while cushion cuts give you a softer, vintage-style sparkle and might save you money. Pick round for classic taste and brightness, cushion for vintage taste and value.

Why does a round diamond cost more than a cushion cut?

Rounds are also the most in-demand diamond shape (they are around half of all diamonds sold), so suppliers and jewelers price them at a premium. Cutting a round wastes about 60% of the rough diamond material, which raises the price, too.

Does a cushion cut diamond look bigger than a round?

Sort of! A cushion cut can look slightly larger from the top because of its bigger table and facets. However, rounds are more brilliant and therefore have more of a presence on our fingers. The two effects largely balance out, so the diamonds of similar quality and weight usually look close in size on the finger.

Do cushion cuts sparkle as much as round diamonds?

Round cut diamonds have been designed to have the most brilliance out of any diamond, so they will always out sparkle cushion cuts. But that doesn't mean cushion cut diamonds are dull! Cushion cuts produce a softer sparkle with more fire (rainbow color). Round wins on raw brightness; cushion wins on warmth and romantic glow.

What color and clarity should I choose for a cushion cut diamond?

For a cushion cut, choose a color grade of H or higher (G or higher in white gold or platinum settings) and a clarity grade of VS2 or higher. Cushion cuts show color and inclusions more readily than rounds because of their larger facets, so paying for a cleaner stone is worth it.