What is a cushion diamond?

A cushion-cut diamond is a diamond with soft rounded edges — it draws on an old diamond shape and it combines a square cut with rounded corners. Cushion-cut diamonds, with their larger facets, are just as dazzling as their round-cut counterparts. Find a range of antique and vintage cushion-cut diamond jewelry on 1stDibs.

What is a cushion cut diamond?

A cushion cut diamond is one that has a square shape with rounded corners. It differs from the similarly shaped emerald cut in that it has a brilliant cut that maximizes sparkle rather than a stepped cut that shows off color and clarity. You'll find a variety of cushion cut diamond jewelry on 1stDibs.

Will Cartier set a loose diamond?

Whether Cartier will set a loose diamond depends on the circumstances. If you purchased a piece of Cartier diamond jewelry and the stone has come loose, contact customer service for assistance with repairs. Cartier will usually not place a loose diamond that you purchased elsewhere in one of their settings. Find a wide range of Cartier diamond jewelry on 1stDibs.

What is the best setting for a cushion cut diamond?

The best setting for a cushion-cut diamond depends on personal preference. The cushion cut is often referred to as a pillow cut due to its square or rectangular shape with rounded edges. This stone cut comprises 58 facets, like brilliant stones. The cushion cut has been popular since the 18th century. Browse a collection of cushion-cut diamond jewelry on 1stDibs.

Do cushion cut diamonds look larger than round?

Yes, cushion cut diamonds look larger than round cut diamonds. Cushion cut diamonds have a larger table per carat than round diamonds, making them appear larger. This coupled with cushion cut diamonds' larger facets, tend to make these types of diamonds appear larger to our eyes.

Loose Cushion Diamonds

Wilf Diamonds Ltd

1 Carat Loose Gemstones

Brown Gemstone Jewelry

10 Carat Radiant Cut Diamond

Israeli Jewelry

Modified Diamond

Cushion Modified Brilliant

Gia Certification

Alexander Beverly Hills GIA 5.01ct Cushion H VS1 Diamond (1.15 ratio)

$139,000Sale Price|20% Off

$17,600

$43,600

GIA Certified 2 Carats D Color VVS1 Clarity Cushion Loose Solitaire Diamond XX-N

By Nikabell fine Jewels

Located in New Delhi, Delhi

This exceptional GIA Certified 2.00 carat Cushion Cut diamond is graded D color and VVS1 clarity, offering remarkable brilliance, purity, and refined symmetry.

Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Diamond

GIA Certified 0.81 Carat Cushion Fancy Deep Orangy Yellow Natural Diamond

$4,000

$7,575

Dazzling 2.00ct Pair of Cushion-Shaped Diamonds - GIA Certified

Located in רמת גן, IL

Dazzling 2.00ct Pair of Cushion-Shaped Diamonds - GIA Certified A stunning matched pair of cushion-cut diamonds totaling 2.00ct, perfect for high-end custom creations—from timeless ...

Category

2010s Israeli Loose Gemstones

Materials

Diamond

Recent Sales

Loose Diamond, 0.94ct, GIA Certified, Cushion Modified Brilliant Cut

Unavailable

Unavailable

W 0.23 in D 0.15 in L 0.24 in

HRDAntwerp certified 1.01 and 1.03 carat Cushion Shape Pair of Natural Diamond

By S E A General Trading LLC

Located in Dubai, UAE

We are natural diamond production company located in Dubai. Ideally matching Pair of 2 Cushion shape natural diamonds Cushion shape natural diamond 1: Weight: 1.01 ct Shape: Cushion ...

Category

21st Century and Contemporary Emirian Modern Loose Gemstones

Materials

Diamond, White Diamond

GIA Certified 2.00-2.05 Carat, G-F/VVS1, Cushion Cut, Excellent Natural Diamond

Unavailable

GIA Certified 2.00-2.05 Carat, G-F/VVS1, Cushion Cut, Excellent Natural Diamond

Located in Darmstadt, DE

GIA Certified 2.00-2.05 Carat, G-F/VVS1, Cushion Cut, Excellent Natural Diamond Perfect Brilliants for perfect gifts. 5 C's: Certificate: GIA Carat: 2.00-2.05ct Color: G-F Clarity:...

Category

2010s German Modern Loose Gemstones

Materials

Diamond

AIG Certified 1.01ct Natural Fancy Colored Diamonds

Unavailable

Sold

GIA Certified 2.04 Carat Fancy Blue Green VS2 Cushion Loose Diamond

By Tamir

Located in Beverly Hills, CA

Immensely rare and exotic 2.04ct fancy bluish green, VS2, cushion loose diamond. GIA certificate attached.

Category

21st Century and Contemporary American Loose Gemstones

Materials

Blue Diamond

1.02 Carat Loose Diamond, Cushion Cut GIA Graded I1 I Solitaire

Sold

1.02 Carat Loose Diamond, Cushion Cut GIA Graded I1 I Solitaire

Located in Greensboro, NC

Shape/Cut: Cushion Clarity: I1 Color: I Dimensions (mm): 6.13 x 5.43 x 3.71 mm Weight: 1.02ct GIA Report Number: 2195793315 Please check out the enlarged pictures. Thank you...

Category

20th Century Unknown Loose Gemstones

Materials

Diamond

Untreated Fancy Pink Purple Diamond IGI Certified Sealed Cushion Cut Loose Gem

Sold

Untreated Fancy Pink Purple Diamond IGI Certified Sealed Cushion Cut Loose Gem

By Gemsandjewelsuk

Located in Birmingham, GB

Untreated Fancy Pink Purple Diamond IGI Certified Sealed Cushion Cut Loose Gem Certified Fancy Pink Purple Diamond Sealed In IGI Seal.

Category

21st Century and Contemporary Loose Gemstones

Timeless 0.50ct Cushion-Shaped Diamond - GIA Certified

Sold

Timeless 0.50ct Cushion-Shaped Diamond - GIA Certified

Located in רמת גן, IL

Timeless 0.50ct Cushion-Shaped Diamond - GIA Certified Discover the brilliance of this 0.50-carat cushion-cut diamond, expertly crafted to captivate and enchant. Certified by GIA, t...

Category

2010s Israeli Loose Gemstones

Materials

Diamond

1.06carat Loose Diamond, GIA Certified Natural Fancy Intense Yellow Diamonds

Sold

Sold

H 0.26 in W 0.38 in L 0.4 in

$23,100

H 0.13 in W 0.19 in L 0.2 in

GIA Certified Fancy Light Gray Blue I1 Clarity Diamond

Located in บางรัก, TH

Certificate: GIA Report Number: 1186645924 Shape And Cut: Radiant Carat Weight: 0.55 carat Measurements: 4.84 x 4.81 x 3.09mm Color Grade: Fancy Light Gray Blue FEATURES OF THE DIAM...

Category

2010s Asian Loose Gemstones

Materials

Diamond

Alexander Beverly Hills GIA 6.10ct Radiant Diamond L SI1

$76,000Sale Price|30% Off

W 9.42 in D 6.52 in L 11.48 in

Alexander Beverly Hills GIA 6.10ct Radiant Diamond L SI1

By Alexander Beverly Hills

Located in BEVERLY HILLS, CA

Stunning loose radiant cut diamond, GIA certified. Sold as loose diamond but can easily be made into a ring of your liking. Crafted by some of the most prestigious bench jewelers in ...

Category

2010s Contemporary Loose Gemstones

Materials

Diamond, White Diamond

GIA Certified 0.46 Carat Fancy Yellow SI1 Clarity Diamond

$730

H 0.12 in W 0.16 in L 0.18 in

GIA Certified 0.46 Carat Fancy Yellow SI1 Clarity Diamond

Located in บางรัก, TH

Certificate: GIA Report Number: 2225385867 Shape And Cut: Cushion Carat Weight: 0.46 carat Measurements: 4.38 x 4.02 x 2.84 mm Color Grade: Fancy Yellow FEATURES OF THE DIAMOND: T...

Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified - 0.72 carats Fancy Intense Yellow Diamond

$4,640Sale Price|20% Off

GIA Certified - 0.72 carats Fancy Intense Yellow Diamond

Located in Ramat Gan, IL

Introducing the Jewel of Radiance: GIA Certified 0.72 Carats Fancy Intense Yellow Diamond Elevate your jewelry collection with the unparalleled beauty and brilliance of our GIA Cert...

Category

21st Century and Contemporary Israeli Loose Gemstones

Materials

Diamond, Yellow Diamond

Alexander GIA Certified 5.01 Carat L VS2 Radiant Cut Diamond

$49,000Sale Price|44% Off

$1,508Sale Price|20% Off

0.82 Carat Cushion Brilliant Gia Certified Fancy Light Brownish Greenish Yellow

Located in New York, NY

ITEM DESCRIPTION ID #: NYC55669 Stone Shape: CUSHION MODIFIED BRILLIANT Diamond Weight: 0.82ct Clarity: SI2 Color: Fancy light Brownish Greenish Yellow Cut: Excellent Measurements: 5...

Category

Antique 15th Century and Earlier Loose Gemstones

Materials

Diamond

1.04 Ct Yellow Sapphire Radiant Loose Gemstone

$830

W 0.2 in D 0.15 in L 0.22 in

1.04 Ct Yellow Sapphire Radiant Loose Gemstone

Located in Fort Lee, NJ

This natural yellow sapphire offers elegance and sophistication. With its rich color saturation and precise cutting, it is the perfect centerpiece for an engagement ring or luxury je...

Category

2010s Sri Lankan Loose Gemstones

Materials

Yellow Sapphire

Radiant Cut 0.46ct Fancy Light Gray Diamond, GIA Certified

$2,130

H 0.12 in W 0.18 in L 0.19 in

Radiant Cut 0.46ct Fancy Light Gray Diamond, GIA Certified

Located in บางรัก, TH

Certificate: GIA Report Number: 1186645948 Shape And Cut: Radiant Carat Weight: 0.46 carat Measurements: 4.04 x 2.93 x 1.86 mm Color Grade: Fancy Light Gray FEATURES OF THE DIAMON...

Category

2010s Asian Loose Gemstones

Materials

Diamond

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PRICE TO SELL, 1.12ct Round Brilliant Cut Natural Diamond

$1,452

PRICE TO SELL, 1.12ct Round Brilliant Cut Natural Diamond

Located in Great Neck Plaza, NY

1.12 ct round brilliant cut loose natural diamond *Free shipping within the US

Category

2010s American Loose Gemstones

Materials

Diamond, 14k Gold, White Gold

1.15ct Sapphire Gemstone - Oval Cut Blue Loose Solitaire

$70

1.15ct Sapphire Gemstone - Oval Cut Blue Loose Solitaire

Located in Greensboro, NC

Shape/Cut: Oval Color: Blue Dimensions (mm): 6.27mm x 5.15mm Weight: 1.15ct Treatment: Heating Please check out the enlarged pictures. Thank you for taking the time to read our...

Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

CHRISTIAN DIOR burgundy CROCODILE LADY DIOR MEDIUM Tote Bag

$22,000

CHRISTIAN DIOR burgundy CROCODILE LADY DIOR MEDIUM Tote Bag

By Christian Dior

Located in Zürich, CH

This 100% authentic Christian Dior Medium Lady Dior bag is crafted in glossy burgundy crocodile leather with a luxurious sheen. The structured silhouette is accented with two hard to...

Category

2010s French Tote Bags

Water Melon Tourmaline 32.66 Carat Green And Red Natural Maginificient Loose Gem

$2,950

W 0.71 in D 0.4 in L 0.82 in

Water Melon Tourmaline 32.66 Carat Green And Red Natural Maginificient Loose Gem

By Malpani Jewels

Located in Hung Hom, HK

Water Melon Tourmaline 32.66 Carat Green And Red Natural Maginificient Loose Gem Details are mentioned below: Weight: 32.66 carats Dimensions:20.81x17.98x9.97 mm Treatment: None Cla...

Category

2010s Hong Kong Arts and Crafts Loose Gemstones

Materials

Tourmaline

Elgin Mid-Century Modern 14k White Gold & Diamond Ladies Watch

Sold|~~$1,200~~

H 1.18 in W 0.64 in

Elgin Mid-Century Modern 14k White Gold & Diamond Ladies Watch

By Elgin

Located in Philadelphia, PA

A fine Mid-Century Modern Elgin lady's watch. In 14 karat white gold. Prong-set with diamonds in a halo surrounding the dial and to the lugs on each end. With a block letter ELGIN...

Category

Mid-20th Century American Modern Wrist Watches

Materials

Diamond, 14k Gold, White Gold

Natural Loose 1.40 Carat Fancy Brown VS2 Penis Cut Diamond

$6,528Sale Price|20% Off

$34,500

HERMES Malachite green Togo leather BIRKIN 30 Bag Ghw

By Hermès

Located in Zürich, CH

This 100% authentic Hermès Birkin 30 bag is crafted from stunning jewel-toned Malachite green Veau Togo leather, paired beautifully with gold-plated hardware. The rich green hue evok...

Category

21st Century and Contemporary French Top Handle Bags

Exceptional 5.09 Carat GRS Certified VIVID RED Unheated Ruby Ring

$216,000Sale Price|20% Off

Exceptional 5.09 Carat GRS Certified VIVID RED Unheated Ruby Ring

Located in Chicago, IL

Exquisite 5.09 Carat GRS Certified Natural Ruby Ring At the heart of this masterpiece lies a 5.09 carat natural ruby, certified by GRS with no indication of thermal treatment and or...

Category

2010s American Contemporary Solitaire Rings

Materials

Diamond, Ruby, Platinum

Emilio Jewelry GIA Certified 5.00 Carat Flawless Fancy Pink Diamond

$4,000,000

Emilio Jewelry GIA Certified 5.00 Carat Flawless Fancy Pink Diamond

By Emilio!

Located in New York, NY

From Emilio Jewelry, a well known and respected wholesaler/dealer located in the Iconic Gem Tower/Gia Building in New York's Diamond District. The color of this diamond is much bette...

Category

21st Century and Contemporary Three-Stone Rings

Materials

Pink Diamond

GIA 17.91 Carat Old Cushion Cut Diamond Solitaire Ring in Platinum

$325,000

GIA 17.91 Carat Old Cushion Cut Diamond Solitaire Ring in Platinum

Located in La Jolla, CA

GIA certified 17.91 carat Old Cushion Cut Diamond Solitaire Ring in Platinum Old Cushion Diamond Ring features a Center Cushion Brilliant Cut Diamond with beautiful vintage carving ...

Category

20th Century North American Solitaire Rings

Materials

Diamond, Platinum

HERMES black Box leather KELLY 25 SELLIER Bag Phw

$42,000

HERMES black Box leather KELLY 25 SELLIER Bag Phw

By Hermès

Located in Zürich, CH

This 100% authentic Hermès Kelly 25 Sellier bag in Noir (black) Veau Box leather is a true collector's piece, crafted from one of Hermès' most coveted and rare leathers. Veau Box lea...

Category

21st Century and Contemporary French Top Handle Bags

Vintage Bvlgari Bulgari Ruby Diamond Jewelry Set 18k Gold Estate Jewelry

$115,500

W 0.38 in

Vintage Bvlgari Bulgari Ruby Diamond Jewelry Set 18k Gold Estate Jewelry

By Bulgari

Located in Beverly Hills, CA

A stunning Bulgari ruby and diamond jewelry set crafted of 18k gold. The set includes a matching necklace, bracelet, and pair of earrings, created with Bulgari’s signature geometric ...

Category

Vintage 1980s Italian More Bracelets

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Hermès Mini Kelly 20cm Sellier Bag Shiny Red Lizard Gold Hdw Vintage

$50,299Sale Price|20% Off

H 5.52 in W 3.15 in L 7.88 in

Hermès Mini Kelly 20cm Sellier Bag Shiny Red Lizard Gold Hdw Vintage

By Hermès

Located in Corcoué Sur Logne, Loire-Atlantique

Adorable and Cutest ever Authentic Hermès Mini Kelly Among the most coveted Hermès bags Sellier Version, rigid, so chic ! Will come with its matching pencil case and ring scarf cl...

Category

Late 20th Century French Top Handle Bags

Child & Child Diamond Platinum Pendant Brooch, circa 1900

$149,442

Child & Child Diamond Platinum Pendant Brooch, circa 1900

Located in London, GB

Pendant brooch by Child & Child. A pendant/brooch in three detachable sections, the uppermost composed of an elongated octagon with inward bowed sides set with one central diamond in...

Category

Antique Early 1900s English Edwardian Brooches

Materials

Diamond, Platinum

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Loose Cushion Diamonds For Sale on 1stDibs

Find an expansive variety of loose cushion diamonds available on 1stDibs. Our selection of items includes 6 vintage examples as well as 5 contemporary versions. Our inventory is broad and distinctive, with accessories on offer that were made as long ago as the 20th Century to those produced as recently as the 21st Century. The designs in our inventory of loose cushion diamonds bearing Art Deco or Contemporary hallmarks are very popular. There have been many well-made iterations of these items over the years, but those made by J. Birnbach and Tamir are often thought to be among the most beautiful. There are many cushion cut and old mine cut loose cushion diamonds for sale. If you’re browsing the variety of loose cushion diamonds for sale, you’ll find that many are available today for men, but there are still pieces to choose from for women.

How Much are Loose Cushion Diamonds?

On average, loose cushion diamonds at 1stDibs sell for $7,190, while they’re typically $2,160 on the low end and $450,000 for the highest priced versions of this item.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement rings, vintage engagement rings or Art Deco engagement rings.

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.

Finding the Right Loose Gemstones for You

Are you shopping for diamonds and other loose gemstones to create your own custom jewelry?

Why might you purchase a diamond or gemstone “loose” — that is, on its own, not mounted in a piece of jewelry? Perhaps you’re a connoisseur looking to acquire a unique investment. The scarcity of high-quality colored diamonds, for instance, especially pink diamonds, means that their value increases over time; the same is true of rare Kashmir sapphires and Burmese rubies. Far rarer than diamonds, Paraiba tourmaline, discovered only in the 1980s, is treasured as much for its extraordinary color as its scarcity, both of which contribute to its high value.

A more common scenario would be that you’re hoping to create a very special piece of custom jewelry, such as an engagement ring or a milestone-birthday present, and want to personally select the most beautiful, unusual, or ultra-rare stone you can find and afford. Doing so adds to the romance and substance of the gift and can be a part of the story told as the jewel is passed from generation to generation.

If this sounds like you, read on for tips on becoming one of the world’s savviest gem hunters.

Educate yourself: When buying any piece of gem-set fine jewelry, you should familiarize yourself with the factors that determine a stone’s price. This will enable you to streamline your search for the perfect gem and have intelligent, productive conversations with sellers.

There is a wealth of information online, such as our diamond-buying guide and this overview of colored gemstones for engagement rings. The buying guides of the Gemological Institute of America (GIA), searchable by stone type, are also a widely trusted source for consumers venturing into the world of diamonds and gems for the first time.

Vet your vendor: If you peruse 1stDibs with any regularity, you know there is no shortage of vendors who deal in top-quality loose gemstones. (Read about our vetted sellers.) Finding a trustworthy, established dealer may be as easy as getting a recommendation from friends or family. And, although it may sound obvious, it pays to Google your candidates — and consult customer reviews — before making contact.

Harakh Mehta, designer and founder of the Mumbai, India–based fine-jewelry brand Harakh, has an innate understanding of proper client relations, especially when the customer is in unfamiliar territory. “Start chatting with the dealer, get to know them better," he says. "It’s very important to establish a comfort level. We never push a sale, as we want it to be a carefully considered purchase. So, if the client is not in a rush, we do it over a few virtual meetings or phone calls.”

Request documentation: The best dealers go to great lengths to furnish clients with documents verifying the quality rating, natural origin and provenance of a stone — showing, for example, that loose emerald hails from the famous Muzo mine in Colombia — and disclosing any treatments applied to enhance its appearance. (And who doesn't love emerald jewelry? The most valuable emeralds are the ones that have a deep bluish-green to true green color and no visible inclusions.)

If no grading report is available for a stone you are interested in, the dealer should be able to provide an authenticity document, such as an appraisal or info sheet, that has been signed by an in-house gemologist or professional appraiser. Google those names, too, for extra peace of mind.

Ask for videos and visuals: When transacting with a gem dealer online, you should always request real-time videos and photographs, since professional photos of a stone, usually on a white background, have likely been retouched for optimal presentation.

Read more about how to buy loose gemstones and find your dream gems today on 1stDibs.

Questions About Loose Cushion Diamonds

What is a cushion diamond?
1 Answer
1stDibs ExpertOctober 12, 2021
A cushion-cut diamond is a diamond with soft rounded edges — it draws on an old diamond shape and it combines a square cut with rounded corners. Cushion-cut diamonds, with their larger facets, are just as dazzling as their round-cut counterparts. Find a range of antique and vintage cushion-cut diamond jewelry on 1stDibs.
What is a cushion cut diamond?
1 Answer
1stDibs ExpertMarch 22, 2022
A cushion cut diamond is one that has a square shape with rounded corners. It differs from the similarly shaped emerald cut in that it has a brilliant cut that maximizes sparkle rather than a stepped cut that shows off color and clarity. You'll find a variety of cushion cut diamond jewelry on 1stDibs.
Will Cartier set a loose diamond?
1 Answer
1stDibs ExpertDecember 12, 2023
Whether Cartier will set a loose diamond depends on the circumstances. If you purchased a piece of Cartier diamond jewelry and the stone has come loose, contact customer service for assistance with repairs. Cartier will usually not place a loose diamond that you purchased elsewhere in one of their settings. Find a wide range of Cartier diamond jewelry on 1stDibs.
What is the best setting for a cushion cut diamond?
1 Answer
1stDibs ExpertOctober 5, 2021
The best setting for a cushion-cut diamond depends on personal preference. The cushion cut is often referred to as a pillow cut due to its square or rectangular shape with rounded edges. This stone cut comprises 58 facets, like brilliant stones. The cushion cut has been popular since the 18th century. Browse a collection of cushion-cut diamond jewelry on 1stDibs.
Do cushion cut diamonds look larger than round?
1 Answer
1stDibs ExpertFebruary 22, 2021
Yes, cushion cut diamonds look larger than round cut diamonds. Cushion cut diamonds have a larger table per carat than round diamonds, making them appear larger. This coupled with cushion cut diamonds' larger facets, tend to make these types of diamonds appear larger to our eyes.