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Diamond Size

Diamond Carat

Carat is often the first thing to come to mind when thinking about a diamond’s size. Size and carat weight are closely related but there are other factors in a diamond’s appearance. Cut and shape also play a role in whether the diamond appears visually larger or smaller than its actual carat weight.

Kwiat Standards

A properly cut diamond will not have too much weight in hidden areas. The added weight increases the cost without giving the diamond a larger appearance. At Kwiat, we cut our diamonds to keep the carat weight in the right places. Each gem has the widest possible diameter to appear larger than other diamonds of comparable carat weight. And because of their superior cut, our diamonds will appear whiter than their GIA color grade. We call this the Kwiat Tiara® Cut.

Kwiat diamonds

  • 5.1 - 5.3mm
    1/2 CARAT
    4.8 - 5.0mm
  • 5.8 - 6.0mm
    3/4 CARAT
    5.6 - 5.8mm
  • 6.4 - 6.6mm
    1 CARAT
    6.2 - 6.4mm
  • 7.4 - 7.6mm
    1 1/2 CARAT
    7.1 - 7.3mm
  • 8.1 - 8.3mm
    2 CARAT
    7.9 - 8.1mm

Other diamonds

Check out Diamond 101 to learn more
Diamond Color and Clarity

Diamond Color

Diamonds are rated on a color scale developed by the GIA, the world’s premier diamond grading nonprofit. The color grading system is based on the alphabet, beginning with the letter D and running all the way through Z. A grade of D is the best possible grade a diamond can receive, which translates to an absence of color. Diamonds with this grade tend to be the most rare and valuable.

Diamond Clarity

Clarity refers to the presence of imperfections, known as inclusions, in the crystal structure of the diamond. Nearly all diamonds contain some sort of inclusion, as they are part of a diamond’s characteristics and structure. An inclusion within a diamond is natural, and on the higher end of the clarity scale, does not take away from its beauty.

Check out Diamond 101 to learn more

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Engagement Ring Main LP – 2022 new

KWIAT TIARA DIAMONDS®

Kwiat diamond cutting standards are the strictest in the world. Our collection of seven exclusive shapes always look bigger and brighter than typical diamonds of the same carat weight.

Kwiat Round
Kwiat Round™

ASHOKA
ASHOKA®

Fred Leighton Round
Fred Leighton Round™

Kwiat Cushion
Kwiat Cushion™

Oval
Kwiat Oval™

Emerald Cut
Kwiat Emerald Cut™

Radiant
Kwiat Radiant™

Kwiat Round™

A whiter, brighter, and larger looking round diamond, cut to the world’s highest standards. Simply brilliant.

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Kwiat Round™ Engagement Ring in Platinum

Kwiat Round™ Engagement Ring in Rose Gold

Kwiat Round™ Engagement Ring in Gold

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ASHOKA®

This remarkable stone is available in the U.S. only at Kwiat. Its unique faceting pattern gives it a dazzling prismatic effect and makes it appear 30% to 50% larger than other diamonds of the same carat weight.

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ASHOKA® Engagement Ring in Platinum

ASHOKA® Engagement Ring in Rose Gold

ASHOKA® Engagement Ring in Gold

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Fred Leighton Round™

We evolved a beloved cut from the 1890s, using modern technology to create consistent dimensions that make the diamond look bigger and brighter. It has all the charm of an antique, and all the precision of a contemporary cut.

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Fred Leighton Round™ Engagement Ring in Platinum

Fred Leighton Round™ Engagement Ring in Gold

Fred Leighton Round™ Engagement Ring in Gold

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Kwiat Cushion™

With an elegant, elongated silhouette, perfect outline, beveled edges, and rounded corners, the Kwiat Cushion is a true brilliant cut with more sparkle and fire. And, unlike most cushions, it looks bigger than a round brilliant diamond of the same weight.

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Kwiat Cushion™ Engagement Ring in Platinum

Kwiat Cushion™ Engagement Ring in Rose Gold

Kwiat Cushion™ Engagement Ring in Gold

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Kwiat Oval™

Oval diamonds have an elongated silhouette that makes them appear larger than their carat weight. Kwiat Oval surpasses the typical, with a perfect shape, ideal length-to-width ratio, and a unique faceting pattern.

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Kwiat Oval™ Engagement Ring in Platinum

Kwiat Oval™ Engagement Ring in Rose Gold

Kwiat Oval™ Engagement Ring in Gold

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Kwiat Emerald Cut™

Popularized during the Art Deco era, the emerald cut has clean lines and parallel step cut facets that create a “hall of mirrors” effect. We improved on the classic to create a modern emerald cut with pure brightness and fire.

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Kwiat Emerald Cut™ Engagement Ring in Platinum

Kwiat Emerald Cut™ Engagement Ring in Rose Gold

Kwiat Emerald Cut™ Engagement Ring in Gold

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Kwiat Radiant™

Radiant cuts are for those who love a diamond with a rectangular shape and more sparkle. Kwiat Radiant offers the maximum brilliance, with a unique combination of facets that creates pure brightness throughout the diamond.

LEARN MORE ABOUT KWIAT RADIANT

Kwiat Radiant™ Engagement Ring in Platinum

Kwiat Radiant™ Engagement Ring in Rose Gold

Kwiat Radiant™ Engagement Ring in Gold

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THE WORLD’S MOST PERSONAL DIAMOND

We’ll help you select a natural, conflict-free, and ethically mined rough diamond and invite you to follow along as its cut and set in a handcrafted ring designed to your specifications. Or, you may choose a diamond that’s already been cut or a completed ring.

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Round Choose your rough

Round Cut to perfection

Round CRAFTED FOR YOU

Conflict free and ethically
sourced diamonds
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Superior quality and
craftsmanship
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GIA graded and certified
diamonds
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Upgrade your
Kwiat diamond
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EXCLUSIVELY AT KWIAT

ASHOKA® Diamonds

The ASHOKA is a trademarked diamond cut that is as distinctive as it is beautiful. A unique arrangement of 62 facets creates a dazzling prismatic effect, giving the ASHOKA its fiery brilliance.

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Kwiat Cushion™

With an elegant, elongated silhouette, perfect outline, beveled edges, and rounded corners, the Kwiat Cushion is a true brilliant cut with more sparkle and fire. And, unlike most cushions, it looks bigger than a round brilliant diamond of the same weight.

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Kwiat Round™

Our exclusive round brilliant diamond exceeds the GIA’s standards, with a superior cut and a diameter that is as wide as possible. The result: a Kwiat Round diamond looks bigger and brighter than others of comparable weight.

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Fred Leighton Round™

Our perfected version of an old European diamond has a consistent shape, precise dimensions, excellent polish and symmetry, a larger table, and a smaller culet. These considered updates retain the romance of an antique cut while making it look bigger and brighter.

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Fred Leighton Round

RESPONSIBLE AND TRANSPARENT

Every Kwiat Tiara diamond is cut from the rough stone by Kwiat and can be traced to its country of origin. This guarantees that the diamond is conflict free and sustainably and ethically mined.

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GIVING BACK

When you choose a Kwiat engagement ring, you are also supporting our contributions to charity: water, an organization that provides clean water to people around the world. Every diamond ring sold provides water for an entire family.

BUILDING A
BRILLIANT LEGACY

Kwiat is a family business with a heritage of service, quality, and integrity. Guided by these values, Kwiat has flourished, blossoming like the family name, which means “flower” in Polish.

In 1907, Sam Kwiat opened a diamond shop in New York City; he was joined by his son, David, in 1933. Today, Kwiat has grown to become a renowned brand led by David’s son, Lowell, and his grandsons, Greg, Cory, and Russell. Like their forebears, they have perfected the science and art of cutting diamonds. And they continue the tradition of trust and authority that Sam Kwiat established more than a century ago.

CUSTOMERS ARE FAMILY

As we welcome you into the Kwiat family, we’ll share our knowledge and expertise. We will gladly provide advice that suits your situation and budget, with personal recommendations for the perfect diamond jewelry for any special occasion. We take pride in our name and what it has come to stand for. And we are grateful that customers and their families return to us again and again, generation after generation.

SEE OUR HISTORY TIMELINE


GET INSPIRED

This charm radiates joy and confidence, just like Leo babies themselves.

#leo #diamondpendant

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This charm radiates joy and confidence, just like Leo babies themselves. #leo #diamondpendant

Multi-row huggies are the perfect earring for every day... a little extra diamond 💎 power never hurt anyone.

#diamondhuggie #diamondhoops

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Multi-row huggies are the perfect earring for every day... a little extra diamond 💎 power never hurt anyone. #diamondhuggie #diamondhoops

Popped into our Madison Avenue flagship to try on some essential accessories, just in time for tennis season. 🎾

#tennisbracelet #linebracelet

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Popped into our Madison Avenue flagship to try on some essential accessories, just in time for tennis season. 🎾 #tennisbracelet #linebracelet

Old European cut diamonds are charming and romantic, but they’re difficult to find with qualities that meet our standards. Our Fred Leighton Rounds feature precision-cut facets and consistent dimensions that reveal a bigger and brighter diamond. Like a family heirloom — but better.

#oldeuropeancut #oldeuropeancutdiamond

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Old European cut diamonds are charming and romantic, but they’re difficult to find with qualities that meet our standards. Our Fred Leighton Rounds feature precision-cut facets and consistent dimensions that reveal a bigger and brighter diamond. Like a family heirloom — but better. #oldeuropeancut #oldeuropeancutdiamond

The newest styles in our Starry Night collection highlight star-set diamonds that orbit the neck like a miniature twinkling galaxy. 💫

#diamondnecklace #neckmess

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The newest styles in our Starry Night collection highlight star-set diamonds that orbit the neck like a miniature twinkling galaxy. 💫 #diamondnecklace #neckmess

Consider color for your summer jewelry looks! Our Argyle collection offers timeless charm, blending vintage details with modern sophistication.

#diamondbangle #braceletstacks #diamondring

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Consider color for your summer jewelry looks! Our Argyle collection offers timeless charm, blending vintage details with modern sophistication. #diamondbangle #braceletstacks #diamondring

Natalie Portman is radiant at tonight’s SAG-AFTRA screening of “Lady In The Lake” in our diamond Orbit Huggies. ✨

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Natalie Portman is radiant at tonight’s SAG-AFTRA screening of “Lady In The Lake” in our diamond Orbit Huggies. ✨