Diamond Education

Offering vintage romance with modern sparkle, the cushion cut diamond is a timeless classic. They bring a distinctive presence to both engagement rings and fine jewelry. If you're considering buying a cushion cut diamond, we will walk you through everything you need to know—from cut styles and proportions to sparkle, value, and buying tips—so you can choose with confidence.

What Is a Cushion-Cut Diamond?

The cushion cut is one of the most recognizable diamond shapes in the world, known for its soft, pillow-like outline and gently rounded corners. Often square or slightly rectangular in shape, cushion cut diamonds are sometimes referred to as "pillow cut" diamonds. Their defining feature is the balance they strike between curved edges and structured facets, creating a look that feels both romantic and substantial.

Cushion Cut Diamond Variations: Standard vs. Modified

One of the most important decisions when choosing a cushion cut is understanding the two primary cutting styles, which create dramatically different appearances:

The Standard Cushion Cut has a classic, antique look closest to the original old mine style. It typically features a smaller table, deeper proportions, and large, clearly defined facets. These facets create bold, geometric flashes of light—often described as a "chunky" brilliance pattern. This style has a strong vintage character and is especially appealing to those who love old-world charm and visible facet structure.

The Modified Cushion Cut (sometimes referred to as the modified cushion brilliant cut) is partially inspired by the round brilliant cut and incorporates additional facets on the pavilion. These extra facets break up the light into smaller reflections, creating a shimmering, "crushed ice" effect rather than distinct flashes. The result is a livelier, more scintillating appearance that many buyers associate with a modern aesthetic.

NOTE: Neither pattern is objectively "better"—it's purely a matter of personal aesthetic preference. Viewing both styles side by side is the best way to determine which speaks to you.

Elongated Cushion Cut Diamonds

Beyond facet structure, cushion cuts also vary in outline. An elongated cushion cut features a rectangular shape with softly rounded corners, offering a longer silhouette compared to a traditional square cushion. This shape can make the diamond appear larger on the finger and is often chosen for its elegant, finger-lengthening effect.

Elongated cushions can be found in both standard and modified cutting styles, meaning buyers can choose between a bold, chunky brilliance or a crushed-ice sparkle while still enjoying the elongated profile. This flexibility makes the elongated cushion especially popular among those who want a balance of classic softness and contemporary proportions.

History of the Cushion Cut

The cushion cut is one of the oldest diamond shapes still in use today, with origins dating back to the early 1700s. Its earliest predecessor, the old mine cut, emerged during the period when Brazil became the world's primary diamond source after India's mines declined.

During this period, Brazilian cutters developed square diamonds with rounded corners to maximize carat retention from rough stones while minimizing waste. These early cuts featured small tables, high crowns, deep pavilions, and large culets—proportions designed to maximize sparkle under candlelight rather than modern electric lighting.

The term "old mine cut" was coined in the late 1800s after diamond discoveries in South Africa, retroactively labeling Brazil's diamond sources as "old." Old mine cuts were dominant from the 18th through the mid-to-late 19th century, before giving way to old European cuts and eventually modern round brilliants.

Although the round brilliant eventually surpassed the cushion in popularity due to superior light performance, the cushion cut never disappeared. Modern cutting techniques have refined the shape to enhance brilliance and fire while preserving its signature softness. Today's cushion cuts blend antique romance with contemporary sparkle, fueling their renewed popularity.

Pros and Cons of Cushion Cut Diamonds

• Romantic, Vintage Appeal: Rounded corners and pillow-like proportions create a soft, romantic look with timeless character.
• Better Value: Cushions cost 20–30% less per carat than comparable round diamonds, offering significant savings that can be allocated to larger size or higher quality.
• Exceptional Fire & Sparkle: Classic cushion cuts with larger facets and deeper proportions are celebrated for their exceptional fire—the dispersion of light into vivid rainbow flashes. Modified "crushed ice" cushion cuts emphasize scintillation over distinct color flashes, creating a softer, more glittering look.
• Design Versatility: Works beautifully in both classic and modern settings. Solitaires, halos, vintage designs, three-stone rings, and contemporary styles all complement cushions.
• Hides Inclusions Well: Modified cushion cuts with their brilliant faceting tend to mask inclusions more effectively, allowing buyers to choose lower clarity grades without sacrificing beauty. Classic cushion cuts, with their larger, more open facets, may make certain inclusions easier to see. Cushion-cut diamonds are also less prone to chipping than diamond shapes with pointed tips.
• Choice of Styles: Standard (chunky) and modified (crushed ice) variations mean you can choose the specific brilliance pattern that appeals to you.

Cons of Cushion Cut Diamonds

• Smaller Face-Up Size: Cushion cut diamonds often appear smaller face-up than elongated shapes (such as oval, pear, or marquise) at the same carat weight, particularly when the cushion has a square outline and deeper proportions. Elongated cushion cuts distribute weight across a longer surface area, making them appear larger while retaining the soft character of the cut.
• Shows Color More: The facet structure and depth make color more visible than in rounds, requiring higher color grades (G–H or better) for a truly colorless look in white metal settings.
• No Cut Grade: Without GIA cut grading, evaluating quality requires more research and careful visual assessment compared to rounds, making the selection process more involved.
• "Crushed Ice" Is Polarizing: Some people love the crushed ice look while others strongly prefer chunky facets. You must determine your preference, and finding your ideal style may take time and viewing multiple stones.

How to Choose a Cushion Cut Diamond

Choosing a diamond can be challenging. When selecting a cushion diamond, these are some of the most important factors to consider.

Cut Quality

Diamond cut quality is the single most important consideration when choosing a cushion cut diamond—even more important than color or clarity. The cut determines how light enters the diamond, reflects within it, and returns to the eye, ultimately defining its sparkle and fire.

Like all fancy shapes, cushions don't receive an overall cut grade from GIA. You must evaluate proportions, symmetry, and polish individually, plus assess the diamond's visual appeal. Ideal proportions for cushions:

• Table percentage: 58% to 70%
• Depth percentage: 61% to 68%
• Symmetry: Good to Excellent
• Polish: Very Good to Excellent

Note that two cushions with identical measurements can look completely different based on faceting style. There is no single ideal proportion range for cushion cuts, as performance varies widely by faceting style. These ranges serve only as general guidelines, and it's always better to view the actual diamond.

Length-to-Width Ratio: Square vs. Rectangular

The length-to-width ratio determines whether your cushion appears square, rectangular, or somewhere in between.

• Square Cushions (1.00–1.05): The most popular ratio, offering balanced proportions that work in most setting styles.
• Slightly Rectangular (1.05–1.10): Often indistinguishable from square when set, these may offer better value.
• Rectangular Cushions (1.10–1.30): Distinctive and elegant, creating finger elongation similar to ovals. Perfect for those wanting something different.

Choose based on personal preference and how the diamond looks in your intended setting.

Clarity

Almost all diamonds have at least some inclusions (internal characteristics) and blemishes (external characteristics), graded under 10x magnification. These characteristics are a normal part of a diamond's formation and are often invisible to the naked eye.

For most buyers, VS2 (Very Slightly Included) or SI1 (Slightly Included) diamond clarity offers the best balance of beauty and value. These grades are significantly more affordable than VVS or flawless stones, yet typically appear perfectly clean to the naked eye in cushion cuts.

Color

Cushion diamonds tend to show color more readily than round brilliants, requiring higher color grades for a truly colorless look, especially in white metal settings. For white gold or platinum settings, G–H diamond color grades are recommended.

However, if you're choosing yellow gold or rose gold, the warm metal color provides coverage for slight warmth in the diamond. In these settings, I–J color grades work beautifully and can actually complement the metal, creating a cohesive, vintage-inspired look.

Carat

Cushions retain more weight during cutting, making them more affordable per carat. However, cushions have a smaller face-up size than elongated shapes like ovals or marquise cuts of the same carat weight due to their squarish proportions and greater depth. Elongated cushion cuts can offer a slightly larger visual presence than square cushions.

For buyers focused on value, choosing a diamond just below a popular carat milestone—such as 0.90 instead of 1.00 carat, or 1.90 instead of 2.00 carat—can offer significant savings with little noticeable difference in appearance. The difference between a 0.95-carat and 1.00-carat cushion is nearly imperceptible to the naked eye, yet the price difference can be substantial.

Why Cushion Cuts Are Popular Again

Cushion cut diamonds are enjoying a renewed moment as buyers gravitate toward designs that feel personal yet timeless. With their softly rounded corners and pillow-like shape, cushion cuts strike a balance between vintage charm and modern appeal—offering warmth and character without feeling traditional in a predictable way. They are also increasingly popular in lab-grown diamonds, giving buyers a more affordable and sustainable way to enjoy this classic style.

Their resurgence has also been shaped by high-profile visibility. Celebrities such as Taylor Swift, Miley Cyrus, Kim Kardashian, Meghan Markle, and Chrissy Teigen have all worn cushion cut diamonds, reintroducing the shape as both romantic and contemporary. Paired with today's wider range of silhouettes and facet styles—from square to elongated forms and everything in between—the cushion cut offers individuality, versatility, and enduring style, making it especially relevant again.

Best Settings for Cushion Cut Diamonds

Cushion cuts are highly versatile and pair beautifully with a wide range of settings. Halo settings enhance perceived size and highlight vintage charm, while solitaires showcase the diamond's natural shape. Three-stone and pavé settings can also be selected if you're seeking additional sparkle. Cushions also work exceptionally well alongside sapphires, rubies, emeralds, or other colored gems.

Buying Tips

• View in person or use HD video to compare brilliance style.
• Prioritize cut over carats.
• Choose a setting style to maximize appearance.
• Insist on a certification with your purchase.
• If buying online, only buy from trusted, reputable jewelers.

Bottom Line Recommendation

Romantic, versatile, and enduringly elegant, cushion cut diamonds offer the perfect balance of antique charm and modern sparkle. With multiple faceting styles, attractive value, and wide design flexibility, they remain one of the most expressive diamond shapes available today. Take time to browse With Clarity's selection of cushion cut diamond engagement rings and jewelry, compare styles and proportions, and you'll find a cushion cut diamond that feels truly personal—and timeless.

Cushion Cut Diamond FAQs

What are the different styles of cushion cut diamonds?

Common styles include the classic cushion brilliant and the cushion modified (crushed ice)—each offering different sparkle patterns.

What clarity grade should I choose for a cushion cut diamond?

Because large facets can make inclusions more visible, many buyers aim for eye-clean stones. Clarity grades of VS2 or higher are typically recommended.

Are cushion cut diamonds suitable for engagement rings?

Yes. They are a popular choice for engagement rings because of their romantic appeal, versatility in settings, and timeless style.

Do cushion cut diamonds sparkle as much as other cuts?

They sparkle differently, offering broad, fiery flashes rather than the intense, pin-point brilliance of round diamonds.

Are cushion cut diamonds more affordable than round diamonds?

Generally yes. Cushion cuts often cost less per carat than round brilliant diamonds of similar quality because they are less wasteful to cut.

Are cushion cut diamonds suitable for earrings and other jewelry besides engagement rings?

Yes. Cushion cut diamonds are highly versatile and look beautiful in other fine diamond jewelry like stud earrings, pendants, and bracelets. Their soft, rounded corners and brilliant faceting give them a romantic sparkle that works well across many types of fine jewelry.

What is a "crushed ice" cushion cut?

The "crushed ice" look refers to cushion diamonds with extra facets that create more scatter and sparkle compared to classic facet patterns.

Is there a standard cut grade for cushion cut diamonds like for round brilliants?

No. Most labs don't assign a cut grade to cushion shapes, so cut quality must be assessed by examining proportions and light performance individually.