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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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Design and Craftsmanship

Kwiat Design and Craftsmanship


For more than a century, Kwiat has focused on crafting timeless diamond jewelry. We honor our heritage by adhering to the strict standards set throughout the years, with an honesty and integrity that is unsurpassed. Our design and cutting expertise has earned us a reputation for the most beautifully cut diamonds in the world.

We promise to continually reimagine what can be done with diamonds, sharing our passion and offering only the most beautiful and brilliant diamonds that are worthy of becoming an heirloom. Kwiat diamonds are Naturally Brilliant™.

Kwiat - Design Difference


We dream up designs for diamond jewelry in our New York City workshop. Diamond cutters, graders, jewelers, setters and polishers work closely with our design team to bring the Kwiat vision to life.

Our collections are designed for your modern lifestyle. Light and airy settings allow diamonds to show off their brilliance. Flexible and fluid connections let jewelry float comfortably against the skin. Each piece is crafted around the beauty of its diamonds to create timeless jewelry that is simply extraordinary.

Kwiat - Expert Craftsmanship


Perfecting the cut of a diamond is both an art and a science. A Kwiat diamond is chosen for its natural beauty. Master craftsmen with years of experience cut each diamond to unlock the brilliance from within.

Diamonds are perfectly matched and set into jewelry designed specifically for their stones. Great care, calculation and precision is required to ensure settings are at once delicate and sturdy, diamond stud earrings maintain their balance as if defying gravity and necklaces sit in exactly the right place and roll only when intended to do so.

A Cut Above


Superb craftsmanship takes time to master. We cut our diamonds with more than a century of expertise. This results in the world’s strictest standards for diamond cuts.

All of our diamonds over half a carat receive a GIA grade for color and clarity. A GIA cut grade is only available for round stones. Ours—the Kwiat Tiara® Cut—must meet the GIA grade of Excellent, but not all GIA Excellent diamonds meet our high standards. We study each GIA Excellent diamond and define a smaller subset of these stones that is worthy of becoming a Kwiat diamond.

The Kwiat
Tiara® Cut

The brightest and most brilliant round diamonds cut to our exacting standards.


Unique and distinctive diamonds, available exclusively through Kwiat.

The Kwiat

An open and airy setting allows the diamond to appear to float weightlessly.

Conflict Free Diamonds


All Kwiat diamonds are natural and conflict-free. We adhere to the Kimberley Process, the United Nations General Assembly-backed program designed to prevent the influx of black market conflict diamonds sold to fund terrorism and civil war.

Kwiat only uses diamonds mined in conflict-free regions and purchased from legitimate sources that are not involved in funding conflict and are in compliance with United Nations resolutions. Kwiat guarantees our diamonds are conflict-free based on personal knowledge and/or written guarantees provided by our suppliers.


From concept to creation, each step in our process is dedicated to creating the finest diamond jewelry with pricing and options for a variety of budgets.

Diamond Selection


We have one of the largest selections of unique, colored and fancy shape diamonds in the world.


Each diamond is cut to our strict standards, developed over a century, to reveal a timeless brilliance.

Exacting Specifications
Original Designs


Diamond jewelry begins as hand-sketched design concepts dreamt up in our workshop.


A master craftsman oversees the a multi-step quality assurance process for all Kwiat jewelry.

Kwiat Setting


Each ring is designed around its center stone and custom designed for its wearer.


Kwiat diamond jewelry is available directly in our salons and at specialty local boutiques near you.

Kwiat Salon
    Behind the name

    A story of integrity