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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

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.

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Kwiat Tiara Diamonds

KWIAT TIARA DIAMONDS®

Informed by more than a century of diamond cutting expertise, Kwiat has the world’s strictest standards for well-cut diamonds — even stricter than GIA standards. Most popular diamond cuts on the market don’t measure up, so we created our own, perfectly cut and consistent every time. These are the Kwiat Tiara Diamonds.

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.

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.

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.

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.

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.

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.

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.

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.

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.

DISCOVER THE WORLD’S MOST PERSONAL DIAMOND RING

LEARN MORE

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

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
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
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. ✨
Each ASHOKA diamond is uniquely cut with 62 precise facets, resulting in this dazzling prismatic effect.

#ASHOKAdiamond #necklace #earrings