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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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Extraordinary Kwiat diamonds to wear always — an enduring reminder of the love you share.

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just for you in our New York City workshop.

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SUPERIOR QUALITY & CRAFTSMANSHIP
We adhere to the strictest standards with unsurpassed honesty and integrity.
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CONFLICT FREE & ETHICALLY SOURCED
We maintain the highest standards for diamond procurement.
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A DIAMOND YOU’LL ALWAYS LOVE
Trade in your center diamond for one of greater size and value.
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GIA GRADED
All Kwiat diamonds are graded by the GIA and come with a GIA report.
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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



A DAILY DOSE OF BRILLIANCE

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. ✨

ASK THE CONCIERGE

Our experts can answer all your questions about diamonds, help you choose a gift, or set up a virtual or in-person appointment.

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