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Cushion Diamond Flawless

GIA Certified 1.20 Carat Internally Flawless Fancy Orangy Pink Diamond Halo Ring
GIA Certified 1.20 Carat Internally Flawless Fancy Orangy Pink Diamond Halo Ring

GIA Certified 1.20 Carat Internally Flawless Fancy Orangy Pink Diamond Halo Ring

By EMD Diamonds

Located in New York, NY

Pink cushion-cut diamond, an extraordinarily rare and coveted color admired for its radiant, romantic

Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Pink Diamond, Platinum

GIA Certified 16 Carat Cushion Cut Diamond Platinum Eternity Band I FLAWLESS VS2
GIA Certified 16 Carat Cushion Cut Diamond Platinum Eternity Band I FLAWLESS VS2

GIA Certified 16 Carat Cushion Cut Diamond Platinum Eternity Band I FLAWLESS VS2

By Antinori Fine Jewels

Located in Chicago, IL

exceptional cushion cut diamonds totaling approximately 16.21 carats. Each diamond is individually GIA

Category

2010s American Band Rings

Materials

Diamond, White Diamond, Platinum

GIA Certified Internally Flawless Clarity D Color Cushion Cut Pave Ring
GIA Certified Internally Flawless Clarity D Color Cushion Cut Pave Ring

GIA Certified Internally Flawless Clarity D Color Cushion Cut Pave Ring

By Antinori Fine Jewels

Located in Chicago, IL

-cut diamond boasting exceptional D color and FLAWLESS clarity grades. Certified by the renowned

Category

2010s Italian Contemporary Solitaire Rings

Materials

Diamond, Gold, 18k Gold, White Gold

GIA 1.60ct D Internally Flawless Diamond Engagement Ring
GIA 1.60ct D Internally Flawless Diamond Engagement Ring

GIA 1.60ct D Internally Flawless Diamond Engagement Ring

Located in New York, NY

cushion cut diamond that weighs 1.60ct. The color of the diamond is D with Internally Flawless clarity

Category

20th Century Engagement Rings

Materials

Diamond, Platinum

Emilio Jewelry Gia Certified Internally Flawless Pink Diamond Ring
Emilio Jewelry Gia Certified Internally Flawless Pink Diamond Ring

Emilio Jewelry Gia Certified Internally Flawless Pink Diamond Ring

By Emilio!

Located in New York, NY

brownish pink diamond with Internally Flawless clarity just over 2.50 carats alone. We are experts in

Category

21st Century and Contemporary Three-Stone Rings

Materials

Pink Diamond

GIA Certified Henri Daussi 2.35 CT Flawless Diamond Sapphire Platinum Ring
GIA Certified Henri Daussi 2.35 CT Flawless Diamond Sapphire Platinum Ring

GIA Certified Henri Daussi 2.35 CT Flawless Diamond Sapphire Platinum Ring

Located in Westport, CT

certified. Centered with one natural cushion cut diamond weighing approximately 0.91 CT and measuring

Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Sapphire, Platinum

Emilio Jewelry GIA Certified 5.00 Carat Flawless Fancy Pink Diamond
Emilio Jewelry GIA Certified 5.00 Carat Flawless Fancy Pink Diamond

Emilio Jewelry GIA Certified 5.00 Carat Flawless Fancy Pink Diamond

By Emilio!

Located in New York, NY

/Gia Building in New York's Diamond District. The color of this diamond is much better than graded

Category

21st Century and Contemporary Three-Stone Rings

Materials

Pink Diamond

Emilio Jewelry Gia Certified 28.00 Carat Intense Yellow Flawless Diamond Ring
Emilio Jewelry Gia Certified 28.00 Carat Intense Yellow Flawless Diamond Ring

Emilio Jewelry Gia Certified 28.00 Carat Intense Yellow Flawless Diamond Ring

By Emilio!

Located in New York, NY

Intense Yellow Diamond, Flawless clarity. Please inquire for more images, certificates, details, and any

Category

21st Century and Contemporary Three-Stone Rings

Materials

Yellow Diamond

Emilio Jewelry Gia Certified 5.00 Carat Flawless Fancy Yellow Diamond Ring
Emilio Jewelry Gia Certified 5.00 Carat Flawless Fancy Yellow Diamond Ring

Emilio Jewelry Gia Certified 5.00 Carat Flawless Fancy Yellow Diamond Ring

By Emilio!

Located in New York, NY

Diamond in the center weighing alone over 5 carats. This diamond is very rare because it has a clarity

Category

21st Century and Contemporary Three-Stone Rings

Materials

Yellow Diamond

Emilio Jewelry 2.50 Carat GIA Certified Internally Flawless Pink Diamond Ring
Emilio Jewelry 2.50 Carat GIA Certified Internally Flawless Pink Diamond Ring

Emilio Jewelry 2.50 Carat GIA Certified Internally Flawless Pink Diamond Ring

By Emilio!

Located in New York, NY

Main stone: 2.50 carats Color: Fancy Light Brownish Pink Clarity: Internally Flawless Shape: CUT

Category

21st Century and Contemporary Three-Stone Rings

Materials

Pink Diamond

Emilio Jewelry GIA Certified Natural Vivid Blue Internally Flawless Diamond Ring
Emilio Jewelry GIA Certified Natural Vivid Blue Internally Flawless Diamond Ring

Emilio Jewelry GIA Certified Natural Vivid Blue Internally Flawless Diamond Ring

By Emilio!

Located in New York, NY

investment diamond only found once in a lifetime. This natural untreated diamond achieved the highest color

Category

21st Century and Contemporary Three-Stone Rings

Materials

Blue Diamond

Exceptional GIA Certified 4 Carat Fancy Yellow Diamond Ring FLAWLESS Clarity
Exceptional GIA Certified 4 Carat Fancy Yellow Diamond Ring FLAWLESS Clarity

Exceptional GIA Certified 4 Carat Fancy Yellow Diamond Ring FLAWLESS Clarity

By Antinori Fine Jewels

Located in Chicago, IL

An exquisite GIA certified 4 carat fancy yellow diamond ring with excellent polish and symmetry and

Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Yellow Diamond

GIA Certified 3.05 Carat Fancy Yellow Diamond Three-Stone Ring, I Flawless
GIA Certified 3.05 Carat Fancy Yellow Diamond Three-Stone Ring, I Flawless

GIA Certified 3.05 Carat Fancy Yellow Diamond Three-Stone Ring, I Flawless

By Antinori Fine Jewels

Located in Chicago, IL

by a GIA-certified natural Fancy Yellow diamond weighing 3.05 carats. Cut in a cushion modified

Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Yellow Gold

1pc Sparkling Natural cut Cushion diamond in a 2.05 carat
1pc Sparkling Natural cut Cushion diamond in a 2.05 carat

1pc Sparkling Natural cut Cushion diamond in a 2.05 carat

Located in רמת גן, IL

Natural cut Cushion diamond in a 2.05 carat D Flawless cut. This diamond comes with GIA Certificate

Category

2010s Israeli Loose Gemstones

Materials

Diamond

3.04 Carat GIA Certified Square Cushion VVS2 Yellow Diamond Halo Ring
3.04 Carat GIA Certified Square Cushion VVS2 Yellow Diamond Halo Ring

3.04 Carat GIA Certified Square Cushion VVS2 Yellow Diamond Halo Ring

Located in San Francisco, CA

flawless Yellow diamond GIA certified encircled by a halo of perfectly matched diamonds and flanked by two

Category

21st Century and Contemporary American Engagement Rings

Materials

Yellow Diamond, 18k Gold, Yellow Gold, Platinum

Victorian 1.60 Ct Old Mine Diamond Trilogy Engagement Ring 18 KT/Silver
Victorian 1.60 Ct Old Mine Diamond Trilogy Engagement Ring 18 KT/Silver

Victorian 1.60 Ct Old Mine Diamond Trilogy Engagement Ring 18 KT/Silver

Located in Napoli, IT

Hallmarks: present but worn Gems: 1 cushion old mine cut diamonds of .80 Ct – Flawless except one chip rated

Category

Antique 1890s European Late Victorian Three-Stone Rings

Materials

Diamond, 18k Gold, Silver

Recent Sales

GIA Graded 0.95 Carat Fancy Light Greenish-Blue Diamond Internally Flawless Ring
GIA Graded 0.95 Carat Fancy Light Greenish-Blue Diamond Internally Flawless Ring

GIA Graded 0.95 Carat Fancy Light Greenish-Blue Diamond Internally Flawless Ring

Located in Warrington, PA

carat Fancy Light Greenish-Blue Diamond Internally Flawless ring. The center stone displays a lovely

Category

Late 20th Century American Art Deco Engagement Rings

Materials

Diamond, White Diamond, Blue Diamond, Platinum

Internally Flawless Cushion Cut 2.85 Carat GIA Diamond Platinum Ring
Internally Flawless Cushion Cut 2.85 Carat GIA Diamond Platinum Ring

Internally Flawless Cushion Cut 2.85 Carat GIA Diamond Platinum Ring

Located in San Francisco, CA

A truly extraordinary ring! An extremely rare Internally Flawless Cushion Cut weighing 2.85 carats

Category

21st Century and Contemporary North American Art Deco Engagement Rings

Materials

Diamond, Platinum

Internally Flawless Cushion Cut 2.85 Carat Diamond Platinum Ring
Internally Flawless Cushion Cut 2.85 Carat Diamond Platinum Ring

Internally Flawless Cushion Cut 2.85 Carat Diamond Platinum Ring

Located in San Francisco, CA

Cushion Cut 2.85ct Diamond accented by 60 Round Cut Diamonds weighing approximately .58ct, in a

Category

21st Century and Contemporary More Rings

Materials

Diamond, Platinum

Graff Internally Flawless D Color 5.01 Carat Cushion Cut Diamond  Ring

Graff Internally Flawless D Color 5.01 Carat Cushion Cut Diamond Ring

By Graff

Located in Greenwich, CT

This is as good as it gets! A cushion brilliant cut internally flawless D color diamond ring

Category

Early 2000s American Contemporary Engagement Rings

Materials

White Diamond, Platinum

Platinum Three Stone GIA Certified Flawless Fancy Yellow Diamond Engagement Ring
Platinum Three Stone GIA Certified Flawless Fancy Yellow Diamond Engagement Ring

Platinum Three Stone GIA Certified Flawless Fancy Yellow Diamond Engagement Ring

Located in Los Angeles, CA

% Iridium Stones-GIA Certified Internally Flawless Fancy Yellow Cushion Cut Diamond 1.35 Carats, Two Side

Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Yellow Diamond, 18k Gold, Yellow Gold, Platinum

Vintage GIA 3.01 Carat Antique Cushion Cut Diamond Platinum Engagement Ring
Vintage GIA 3.01 Carat Antique Cushion Cut Diamond Platinum Engagement Ring

Vintage GIA 3.01 Carat Antique Cushion Cut Diamond Platinum Engagement Ring

Located in Beverly Hills, CA

spectacular D VVS2 Antique Cushion Cut Diamond ring. Flawless Protection Plan: -7-day return policy for a

Category

Vintage 1950s Retro Engagement Rings

Materials

Diamond, Platinum

Tiffany & Co Soleste Intense Yellow Radiant Platinum Ring .68ct Int. Flawless
Tiffany & Co Soleste Intense Yellow Radiant Platinum Ring .68ct Int. Flawless

Tiffany & Co Soleste Intense Yellow Radiant Platinum Ring .68ct Int. Flawless

By Tiffany & Co.

Located in New York, NY

, Internally Flawless, cushion brilliant diamond, framed by a double halo of round brilliant diamonds and a

Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

Diamond, Yellow Diamond, Gold, 18k Gold, Yellow Gold, Platinum

Lustrous 1.32ct Diamond Pave Ring in 18k Yellow Gold - GIA Certified
Lustrous 1.32ct Diamond Pave Ring in 18k Yellow Gold - GIA Certified

Lustrous 1.32ct Diamond Pave Ring in 18k Yellow Gold - GIA Certified

Located in רמת גן, IL

, this exquisite diamond pave ring showcases a captivating 1.00-carat cushion-cut diamond, ensuring a

Category

2010s Israeli Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold

Tiffany & Co. Soleste Fancy Yellow and White Diamond Platinum Ring
Tiffany & Co. Soleste Fancy Yellow and White Diamond Platinum Ring

Tiffany & Co. Soleste Fancy Yellow and White Diamond Platinum Ring

By Tiffany & Co.

Located in Southampton, PA

Fancy Yellow Cushion modified diamond Internally Flawless total weight .55ct Round brilliant cut

Category

Early 2000s American Cocktail Rings

Materials

White Diamond, Yellow Diamond, 18k Gold, Platinum

I Flawless 3 Carat Cushion Cut Diamond Platinum Solitaire Ring
I Flawless 3 Carat Cushion Cut Diamond Platinum Solitaire Ring

I Flawless 3 Carat Cushion Cut Diamond Platinum Solitaire Ring

By Antinori Fine Jewels

Located in Chicago, IL

An exquisite brilliant cushion diamond with two tapered baguette diamonds and is mounted in solid

Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Platinum

Internally Flawless GIA Certified 2 Carat Cushion Cut Diamond Ring
Internally Flawless GIA Certified 2 Carat Cushion Cut Diamond Ring

Internally Flawless GIA Certified 2 Carat Cushion Cut Diamond Ring

By Antinori Fine Jewels

Located in Chicago, IL

INTERNALLY FLAWLESS GIA Certified 2 Carat Cushion Cut Diamond Ring Excellent polish Excellent

Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

I Flawless GIA Certified Fancy Intense Yellow 2.48 Carat Cushion Diamond Studs
I Flawless GIA Certified Fancy Intense Yellow 2.48 Carat Cushion Diamond Studs

I Flawless GIA Certified Fancy Intense Yellow 2.48 Carat Cushion Diamond Studs

By Antinori Fine Jewels

Located in Chicago, IL

An exquisite pair of internally flawless GIA certified 2.48 carat fancy intense yellow cushion cut

Category

2010s Italian Modern Clip-on Earrings

Materials

Diamond, Yellow Diamond

GIA Certified Internally Flawless Cushion Diamond 3.59 Carat TW Cocktail Ring
GIA Certified Internally Flawless Cushion Diamond 3.59 Carat TW Cocktail Ring

GIA Certified Internally Flawless Cushion Diamond 3.59 Carat TW Cocktail Ring

Located in New York, NY

Gold setting with a natural cushion cut yellow diamond. The yellow diamond is surrounded by natural

Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Yellow Diamond, Gold, 18k Gold, White Gold, Yell...

GIA Certified 3.00 Carat Fancy Yellow Cushion Cut Diamond Ring I FLAWLESS
GIA Certified 3.00 Carat Fancy Yellow Cushion Cut Diamond Ring I FLAWLESS

GIA Certified 3.00 Carat Fancy Yellow Cushion Cut Diamond Ring I FLAWLESS

By Antinori Fine Jewels

Located in Chicago, IL

Amazing GIA Certified natural 2.37 carat fancy yellow Internally flawless clarity cushion cut

Category

2010s Italian Modern Engagement Rings

Materials

Diamond, Yellow Diamond, White Diamond, Platinum

GIA Certified 3.00 Carat Fancy Yellow Cushion Cut Diamond Ring Int. Flawless
GIA Certified 3.00 Carat Fancy Yellow Cushion Cut Diamond Ring Int. Flawless

GIA Certified 3.00 Carat Fancy Yellow Cushion Cut Diamond Ring Int. Flawless

By Antinori Fine Jewels

Located in Chicago, IL

Amazing GIA Certified natural 3 carat fancy yellow Internally flawless clarity cushion cut diamond

Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Yellow Diamond, 18k Gold, White Gold, Yellow Gold

Internally Flawless GIA Certified 4 ct. Fancy Light Yellow Cushion Diamond Ring
Internally Flawless GIA Certified 4 ct. Fancy Light Yellow Cushion Diamond Ring

Internally Flawless GIA Certified 4 ct. Fancy Light Yellow Cushion Diamond Ring

By Antinori Fine Jewels

Located in Chicago, IL

This stunning ring is adorned with a magnificent 4-carat Fancy Light Yellow cushion-cut diamond, a

Category

2010s Unknown Contemporary Engagement Rings

Materials

Diamond, Yellow Diamond, 18k Gold, White Gold, Yellow Gold

Flawless GRS Switzerland Deep Royal Blue Cushion Sapphire Ring
Flawless GRS Switzerland Deep Royal Blue Cushion Sapphire Ring

Flawless GRS Switzerland Deep Royal Blue Cushion Sapphire Ring

By Antinori Fine Jewels

Located in Chicago, IL

An important sapphire and diamond ring handmade in Italy. With it's deep royal blue glow and

Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, 14k Gold

Rare 8.88 Carat GIA Certified Internally Flawless Fancy Yellow Diamond Ring
Rare 8.88 Carat GIA Certified Internally Flawless Fancy Yellow Diamond Ring

Rare 8.88 Carat GIA Certified Internally Flawless Fancy Yellow Diamond Ring

Located in Tustin, CA

total weight diamond ring features in the center one GIA Certified Internally Flawless Cushion Modified

Category

21st Century and Contemporary Unknown Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Yellow Diamond, White Gold, 18k Gold, Yellow Gold

GIA Certified Fancy Yellow 2 Carat Cushion Cut Diamond Studs VVS1/IF
GIA Certified Fancy Yellow 2 Carat Cushion Cut Diamond Studs VVS1/IF

GIA Certified Fancy Yellow 2 Carat Cushion Cut Diamond Studs VVS1/IF

By Antinori Fine Jewels

Located in Chicago, IL

GIA Certifed Fancy Yellow 2 Carat Cushion Cut Diamond Studs VVS1 - Internally Flawless clarity

Category

2010s Italian Modern Clip-on Earrings

Materials

Diamond, Yellow Diamond

GIA Certified Fancy Yellow 2 Carat Cushion Cut Diamond Studs IF/VVS1
GIA Certified Fancy Yellow 2 Carat Cushion Cut Diamond Studs IF/VVS1

GIA Certified Fancy Yellow 2 Carat Cushion Cut Diamond Studs IF/VVS1

By Antinori Fine Jewels

Located in Chicago, IL

GIA Certifed Fancy Yellow 2 Carat Cushion Cut Diamond Studs Internally Flawless VVS1 clarity

Category

2010s Italian Modern Clip-on Earrings

Materials

Diamond, Yellow Diamond

David Rosenberg 15.58 ct Cushion D Internally Flawless Type 2A GIA Diamond Ring
David Rosenberg 15.58 ct Cushion D Internally Flawless Type 2A GIA Diamond Ring

David Rosenberg 15.58 ct Cushion D Internally Flawless Type 2A GIA Diamond Ring

By David Rosenberg

Located in Boca Raton, FL

Rosenberg Diamonds & Co. 15.58 carat Radiant shape D color Internally Flawless Type 2 A clarity is

Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, White Diamond, Platinum

5.26 Flawless Cushion Cut Tanzanite Sapphire Diamond Cocktail 18 Carat Gold Ring
5.26 Flawless Cushion Cut Tanzanite Sapphire Diamond Cocktail 18 Carat Gold Ring

5.26 Flawless Cushion Cut Tanzanite Sapphire Diamond Cocktail 18 Carat Gold Ring

Located in Hamilton, AU

halo cluster ring featuring a stunning 5.36 carat cushion cut Tanzanite is encompassed with a unique

Category

21st Century and Contemporary Australian Contemporary Cocktail Rings

Materials

Garnet, Sapphire, Spinel, Diamond, Tanzanite, Gold, 18k Gold, White Gold...

GIA Certified 2.5 Carat D Color Internally Flawless Cushion Cut Diamond Ring
GIA Certified 2.5 Carat D Color Internally Flawless Cushion Cut Diamond Ring

GIA Certified 2.5 Carat D Color Internally Flawless Cushion Cut Diamond Ring

Located in Mayfair, GB

GIA Certified 2.5 carat D Colour and Internally Flawless Cushion Cut Diamond ring A gorgeous Gia

Category

21st Century and Contemporary Unknown Contemporary Engagement Rings

Materials

18k Gold

Tiffany & Co Soleste Platinum and Diamond 1.28 Carat H Internal Flawless
Tiffany & Co Soleste Platinum and Diamond 1.28 Carat H Internal Flawless

Tiffany & Co Soleste Platinum and Diamond 1.28 Carat H Internal Flawless

By Tiffany & Co.

Located in Middletown, DE

cushion cut diamond that is 1.28 carat H color, Internal FLAWLESS clarity and excellent cut and symmetry

Category

2010s American Engagement Rings

Materials

White Diamond, Platinum

Tiffany & Co. 2018 True Diamond .90 Carat Ring H Internal Flawless 3EX
Tiffany & Co. 2018 True Diamond .90 Carat Ring H Internal Flawless 3EX

Tiffany & Co. 2018 True Diamond .90 Carat Ring H Internal Flawless 3EX

By Tiffany & Co.

Located in Middletown, DE

basically brand new Tiffany & Co Platinum and Diamond .90 carat natural cushion cut TRUE engagement ring set

Category

2010s American Engagement Rings

Materials

Diamond, Platinum

Cushion Cut Yellow Diamond Ring
Cushion Cut Yellow Diamond Ring

Cushion Cut Yellow Diamond Ring

Located in Atlanta, GA

A beautiful 5 1/5 carat cushion cut yellow near flawless diamond ring with tremendous brilliance

Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, 18k Gold

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By Emilio!

Located in New York, NY

From the museum vault at Emilio Jewelry New York, One of the rarest and only diamonds of its size and color. Please inquire for details.

Category

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Materials

Blue Diamond

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GIA Certified 1.01 Carat Old Mine Cut Diamond Platinum Engagement Ring
GIA Certified 1.01 Carat Old Mine Cut Diamond Platinum Engagement Ring

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Cushion Diamond Flawless For Sale on 1stDibs

Find the exact cushion diamond flawless you’re shopping for in the variety available on 1stDibs. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and Platinum — can elevate any look. In our selection of items, you can find a vintage example as well as a contemporary version. You’re likely to find the perfect cushion diamond flawless among the distinctive items we have available, which includes versions made as long ago as the 20th Century as well as those produced as recently as the 21st Century. Finding an appealing cushion diamond flawless — no matter the origin — is easy, but Antinori Fine Jewels, Emilio! and Tiffany & Co. each produced a popular version that is worth a look. Today, if you’re looking for a cushion cut version of this piece and are unable to find the perfect match, our selection also includes antique cushion cut alternatives. If you’re browsing our inventory for a cushion diamond flawless, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a Cushion Diamond Flawless?

The price for a cushion diamond flawless starts at $4,850 and tops out at $3,200,000 with these rings, on average, selling for $49,112.

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 ringsvintage engagement rings or Art Deco engagement rings

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

Questions About Cushion Diamond Flawless
  • 1stDibs ExpertApril 5, 2022
    A flawless diamond is a diamond that has no inclusions or blemishes visible under 10X magnification. Flawless diamonds are incredibly rare because all naturally occurring diamonds will have inclusions. Shop a collection of diamond jewelry on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    It is impossible to say the exact number of Flawless diamonds that are in existence. However, diamonds with the Flawless clarity rating are extremely rare. This category consists of around only a half a percent of diamonds in existence. On 1stDibs, find an array of authentic Flawless diamond pieces.
  • An internally flawless diamond is a diamond that does not have any visible inclusions under a 10x magnification.
  • 1stDibs ExpertFebruary 13, 2023
    Yes, flawless diamonds are more expensive than diamonds with imperfections. Flawless diamonds have no visible inclusions and the surface of these precious stones is free of blemishes. Flawless diamonds are considered to be rare and of higher quality, which renders them more valuable. The 4Cs, the grading system that was established by the Gemological Institute of America (GIA) in the 1950s, are the guidelines that determine how flawless diamonds are graded. Find diamond jewelry on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    A D flawless diamond is a diamond gemstone of exceptional quality. Gems worthy of the title have the best possible color and clarity grades. Expert gemologists working in third-party laboratories provide the ratings for gemstones. Shop a range of diamond gemstone jewelry on 1stDibs.
  • 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.
  • 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.
  • 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.
  • 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.