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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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Engagement Ring Main LP – 2022 new

MORE BRILLIANT, MORE BEAUTIFUL

We cut our diamonds to look bigger and brighter so you’ll get more compliments per carat.

MORE BRILLIANT,
MORE BEAUTIFUL

We cut our diamonds to look bigger and brighter so you’ll get more compliments per carat.

SHOP BY SETTING SHOP BY SHAPE SEE OUR EXCLUSIVE CUTS

Unique rings, custom created in New York City.

Unique rings, custom created in
New York City.

SHOP BY ENGAGEMENT RING STYLE

Start with a setting you love, then choose the diamond.

SHOP BY CENTER DIAMOND SHAPE

Start with a diamond shape you love, then choose the setting.

DESIGNED JUST FOR YOU

We’ll custom creat the ring of your dreams in 3 easy steps.

Step 1

SHARE YOUR VISION

Tell us what you’re looking for and learn more about why our diamonds look bigger and brighter. One of our experts will walk you through the process and answer all your questions.

Step 2

WE WORK OUR MAGIC

After your visit, our designers get started. You’ll be presented with hand-drawn renderings of each angle of your ring, true to color and scale. We welcome your feedback and will make changes to the design until we get it right — we’re not happy until you are.

Step 3

YOUR RING BECOMES REALITY

In our New York City studio, we’ll create your one-of-a-kind ring with utmost attention to quality and craftsmanship. Prepare to be dazzled.

Conflict free and ethically
sourced diamonds

Superior quality and
craftsmanship

GIA graded and certified
diamonds

Upgrade your
Kwiat diamond

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.

VIEW ASHOKA DIAMOND ENGAGEMENT RINGS

VIEW RINGS

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.

VIEW KWIAT CUSHION ENGAGEMENT RINGS

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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.

VIEW KWIAT ROUND ENGAGEMENT RINGS

VIEW RINGS

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.

VIEW FRED LEIGHTON ROUND ENGAGEMENT RINGS

VIEW RINGS

Fred Leighton Round

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

Happy Friday, and hello to this gorgeous Kwiat Cushion™ rivière featuring over 45 carats of dazzling diamonds.

#diamondtennisnecklace #onlynaturaldiamonds #necklaceoftheday
When you can’t decide whether to mix or match… just keep stacking! Elevate your engagement ring with a coordinating Kwiat Cushion band, then top it off with a unique mixed-shape ring from our American Beauty collection. 

#engagementringideas #cushioncutdiamond
Best friends who know how to bracelet stack 🤝

#braceletstacks #braceletlover #braceletoftheday
It’s starting to feel like layering season here in NYC (although for us, layering works year-round).

#diamondtennisnecklace #onlynaturaldiamonds #neckmess
Curious to know how different cuts appear at the same carat weight? The Kwiat Cushion, Kwiat Radiant and Kwiat Round shown here are all about 2.5 carats, and all cut to reveal maximum beauty and sparkle. 

#cushioncutdiamond #radiantcutdiamond #roundcutdiamond
Perfecting the cut of a diamond is both an art and a science. ASHOKA diamonds are chosen for their natural beauty. The master craftsmen with years of experience cut each diamond to unlock the brilliance within. #ASHOKAdiamonds #necklaces
Did you know that sapphires are second only to diamonds in durability? They also come in many colors beyond the well-known royal blue hue. DM us for more gift ideas that showcase this stunning September birthstone.

#sapphire #birthstones #bracelets
School is in session — Kwiat Jewel School, that is. 😉 You already know that regular jewelry cleaning is a must for sparkly looking diamonds. But did you know that dirt build-up over time can actually loosen the prongs holding your stones in place? Keep a Sparkle & Shine kit handy for regular touch-ups, and make sure to visit us at least twice a year for professional cleanings, too! 

#engagementring #ASHOKAdiamond #jewelrycleaning