kwee-AH-T | DIAMONDS SINCE 1907
kwee-AH-T | DIAMONDS SINCE 1907
MINE TO SHINE

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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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Mine to Shine New

THE WORLD’S MOST
PERSONAL DIAMOND

A natural, conflict free, and ethically mined rough diamond. Chosen just for you, cut just for you, in a setting designed just for you. A one-of-a-kind way to create your one-of-a-kind ring.

GETTING ENGAGED?
LEARN MORE

LET’S GET REAL ABOUT DIAMONDS

Sit down with the Kwiat family for a discussion about Mine to Shine, including our perfectly cut Kwiat Tiara® Diamonds (and why they sparkle more) — as well as our commitment to giving back.

THE JOURNEY FROM ROUGH TO RING

A look at the four steps that transform a rough diamond into an extraordinary ring that celebrates your love.

STEP 1

Choose Your Rough Diamond

We’ll help you choose an uncut stone that will beautifully yield the diamond shape you desire. It will be from a known country of origin, ensuring it is conflict free and ethically mined.

STEP 2

Cut to Perfection

Thanks to more than a century of experience, Kwiat diamonds are cut to the world’s highest standards. Kwiat Tiara Diamonds, our exclusive collection of perfectly cut iconic shapes, are only available at Kwiat.

STEP 3

Design Your Ring

We’ll guide you through the design process as you choose the details that will make your ring unique. Our designers will get to work on a 3-D rendering that shows your ring from every angle. Request any changes you’d like — we’re not happy until you are.

STEP 4

Crafted for You

Master artisans in our New York City workshop will handcraft your setting in platinum or 18K gold, per your specifications, and mount your perfectly cut diamond. The final result: a stunning, one-of-a-kind ring with unparalleled beauty and brilliance.

ONLY AT KWIAT

Kwiat Tiara Diamonds — seven iconic shapes, cut to perfect standards and absolutely consistent every time. Each cut reveals the maximum brilliance and size appearance for its weight…which means your diamond will always look bigger and brighter.
KWIAT ROUND™
ASHOKA®
FRED LEIGHTON® ROUND
KWIAT CUSHION™
KWIAT OVAL™
KWIAT EMERALD CUT™
KWIAT RADIANT™

Kwiat RoundTM

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

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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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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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Kwiat CushionTM

The cushion cut has been adored for centuries, but it’s difficult to find a well-cut one. That’s why we created Kwiat Cushion — a true brilliant cut with more sparkle and fire.

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Kwiat OvalTM

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 Emerald CutTM

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 RadiantTM

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.

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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