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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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Our design philosophy is to celebrate the beauty of our diamonds – and the women who wear them. The signature Kwiat Setting is open and airy, letting the diamond appear to float weightlessly. The result is a refined and feminine design that allows greater light flow into the diamond, enhancing its brilliance.


All Kwiat engagement rings are handcrafted in our workshop on Madison Avenue in New York City. Diamond graders, cutters, setters and polishers work closely with our designer to bring your vision to life. Once crafted, each ring is studied by the Kwiat Quality Assurance team to ensure your ring will stand the test of time.


We invite you to begin your design journey by providing as much information as you can to get started.


Our customers are an extension of our family. You are always welcome to visit us for complimentary jewelry cleaning, sizing and insurance appraisals for all Kwiat jewelry. We also offer a trade-up program for Kwiat solitaire diamonds.


All Kwiat diamonds weighing more than one carat are graded by the GIA. All Kwiat jewelry is accompanied by the Kwiat Certificate of Authenticity. This certificate documents the specifics of each piece of jewelry and the purchase date. The Kwiat family signs each certificate, ensuring that the jewelry meets our high standards of excellence.