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Compare The 6 Types of Cushion Cut Diamonds (With Videos)

Cushion cut diamonds come in a wide range of faceting patterns which can dramatically change their look. Learn which you want, and which you don’t.

The only thing most cushion cut diamonds have in common is their name. Unbeknownst to most, cushion cuts come in a wide range of ratios and faceting patterns, which can dramatically alter their sparkle and personality.

But, despite their popularity, cushion cut diamonds are largely misunderstood.

If you’re shopping online, finding a specific type of cushion can be tricky. The only way to really know what you’re looking at is to look at the faceting pattern on the certificate or to see it in person. Lucky for you, the cushion cut is an incredibly versatile shape. Whether you prefer an elongated, short, square or chunky shape — chances are there’s a cushion for you. You just have to find it.

Next, we’ll break down the traditional cuts and ratios, and some of their variations, so you can find the diamond of your dreams. With no further ado, these are the six types of cushion cut diamonds.

Antique Cushion Cuts

Cushion cut diamonds have history — lots of history. They were first developed in the 1800s. At the time, this pillowy pile of sparkles was called an old mine cut, or a mine brilliant. Old mine cushion cut diamonds started as squarish diamonds with round corners.

1.46 Carat Antique Peruzzi Cushion Cut Diamond
1.46 Carat Antique Peruzzi/Cushion Cut
0.97 Carat Old Cushion Old Miner
0.97 Old Cushion/Old Miner

.76 Carat Old Cushion
0.70 Carat Old Cushion
.88 Carat Old Mine Cut
0.76 Old Miner
1.84 carat elongated old cushion
1.84 Carat Elongated Old Cushion

The old mine cut has 33 crown facets and 25 pavilion facets for a total of 58 facets. These chunky, rounded cuts tend to be a bit warmer in color and give off charming flashes of light. While old mine cuts aren’t as optimized as their modern counterparts, they’re very rare, and have a unique personality all their own. There’s a lot to love about the older faceting of these vintage stones.

The Curse of Antique Cushions

If you’re shopping for an antique cushion, don’t be surprised to find terms like “good” and “fair” all over the grading report.  Symmetry and polish have improved dramatically with technology. Diamond cutters of old didn’t have the tools to optimize brilliance to the degree that modern diamond cutters do. Antique cushions often have misshapen facets, steep crown angles, too-shallow profiles, poor symmetry, and too-large culets. While all of these things can impact the optical performance and sparkle, the charm and beauty of these antique cuts is unique and appealing.

With time, the old mine cut evolved into the modern cushion cut.

Harper No. 4 set with a 2 carat cushion cut diamond and paired with a yellow gold east west oval eternity band
Harper No. 4 set with a cushion cut diamond and paired with our XO band

Modern Cushion Cut Diamonds

With 64 precisely cut facets, the modern cushion is significantly more brilliant than its predecessor. Modern cushion cut diamonds combine the brilliance of a round diamond, with the squared silhouette of the princess, and resemble, as their name suggests, cushions!

While cushion cut diamonds are generally less brilliant than rounds; with their stunning fire, romantic pillowy form, and more affordable price tag — there’s a lot to love.

There are many types of modern cushion cut diamonds, but they vary in two primary ways: the faceting pattern, and the overall length to width ratio.

Because of this, they are generally bucketed into two categories — cushion brilliants, and modified cushions. Let’s look at the differences between the two.

Crushed Ice Cushion

Brilliant Cushion

3. The Cushion Brilliant

Cushion brilliants are very similar to round brilliants. If you flip a cushion brilliant over on its crown, the similarities become apparent. Like the round, the main pavilion facets extend from the center of the diamond to the outer edge (the girdle) and form a star. These larger facets form an x shape when they are viewed from above. Cushion brilliants are less common than modified cushions. They are are also more expensive.

There are a few different faceting patterns you’ll see with cushion brilliants including 4, 6, 8, or 10 mains. The most common is the “four main” — the number of “mains” corresponds to the number of large facets that intersect at the culet. Cushion brilliants with eight mains are very desirable. They’re also very difficult to find.

Brilliant cushion cut diamonds come in a variety of faceting patterns. This diagram depicts the main ones.

4. Modified Cushion Cut Diamonds

Modified cushion brilliants are a variation on the cushion brilliant. This bucket represents the buck of diamonds on the market. Diamond cutters like them because they waste less in cutting. This results in a heaver (read more expensive) cut diamond. Looking at the faceting pattern, you’ll notice an extra row of facets that break up the classic triangular pattern and form a flower shape. There are an endless number of modified cushion brilliants on the market, all of which have a slightly different look.

Confused yet?

Instead of getting bogged down in faceting patterns, it’s easier to focus on the overall look. If you’re shopping online, you’ll want to see an up-close video of any cushion you’re considering. If one isn’t available, just ask. Cushions tend to have one of two different personality types, sparkly crushed ice appearance, or a chunkier look. Let’s tale a look at the difference.

5. Crushed Ice Cushion Cut Diamonds

Certain cushions have a “crushed ice look.” Technically they’re a modified cushion but they’ve been heavily modified to eliminate the dominance of those four central triangles. Scroll down and look at the faceting pattern on the far right – that’s what you’re looking for. Lots of smaller broken up triangles. The more the merrier.

When you look at a crushed ice cushion, it’s like looking into a pool of sparkling water in the bright sun. The flashes of light are chaotic, disorderly, and you can’t stop staring.

“Crushed ice” cushions lack the scintillation and contrast of a chunkier, but they are mesmerizing in their own right. 

Modified cushion cut diamonds come in a variety of faceting patterns. This diagram depicts the main ones.

Tips for shopping for a crushed ice cushion

Similar to on oval, these cushions hold their color more than chunkier cushions, and you’ll want to opt for an H color grade or better if you can. When it comes to clarity, the tiny broken up facets are endlessly forgiving and perfect for masking inclusions. SI1 is a good place to start your search, SI2 can be worth a look as well. Both cushion brilliants and modified cushions can display a crushed ice look. If you’re curious about the faceting pattern, you can look at the certification or ask us.

I SI1 Lab Grown Cushion
F VVS2 Lab Grown Cushion

5. Chunky Cushion Cut Diamonds

Certain cushion cut diamonds have what we call a “chunky” look. These diamonds are more similar to a round brilliant. If you look closely, you’ll notice a clearly defined faceting pattern and sharp, contrasting areas of light and dark. These cushions are generally more brilliant and more desirable than their crushed ice counterparts, but considerably harder to find.

Tips for shopping for a chunky cushion

Chunky cushions mask inclusions and color well. You can comfortably search in the I-J SI range without worrying about the diamond being overly yellow or included.

I SI1 Lab Grown Cushion
F VS2 Lab Grown Cushion Cut

6. Elongated Cushion Cut Diamonds

4 Carat lab grown elongated cushion F VS
with crushed ice faceting

While cushion cut diamonds get their name from their pillowy form, they come in a variety of ratios. More recently, elongated cushions have become popular as an alternative to the slender look of the oval diamond. Elongated cushions typically have a 1.1 or 1.2 ratio and, like ovals, have the added benefit of lengthening the finger.

Lab grown elongated cushions are extremely difficult to source, so you’ll most likely want to get some help. This shape can also be a great alternative for oval lovers who can’t see past the bow tie.

Brilliant elongated cushion set in Harper No. 4 two tone a diamond engagement ring setting with a yellow gold band and platinum prongs
Brilliant elongated cushion
set in Harper No. 4 two tone
Cushion cut diamonds come in three main rations, square, rectangular and elongated. This diagram depicts all three.

The One Cushion Cut You Shouldn’t Buy

The one you’re not in love with. The reality is each and every cushion is totally unique, and each diamond is going to give your ring a different look. From more rounded pillowy forms to more square, rectangular forms and antique cuts to modern crushed and brilliant facetings patterns no two are quite the same. Figuring out which shape and ratio you prefer is more important than figuring out the four c’s as these will have a bigger impact on the diamonds overall look, sparkle and “je ne sais quoi.”

Considering a Cushion Cut?

Check out our diamond search where you can view 360-degree images of more than 10,000 diamonds and don’t forget to zoom out (because size can be deceiving), or book a virtual or offline appointment at our New York salon to view certified lab-grown and natural diamonds in person. 

Not finding what you’re looking for? Email us with what you’re looking for at hello@frankdarling.com. We’ll curate a list of 5-7 exclusive stones that are just right for you.