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Craft Your Unique Story:
From Rough Diamond to Personal Masterpiece

Choosing an engagement ring should be fun, meaningful, and personal. And it’s even more so when you experience Mine to Shine, choosing your own ethically mined rough diamond and following its journey to the ring of your dreams.

We’re here to help. Simply answer a few quick questions so we can guide you.
Let’s start with shape
All Kwiat Tiara Diamonds™ are cut to perfect standards to look bigger and brighter than others of the same carat weight.

Choose your favorite(s) below.
Now, let’s talk size
Kwiat Tiara Diamonds are perfectly cut to look bigger and more brilliant, no matter the carat weight.
Major brilliance at every price
No matter how much you plan to spend, we promise to give you the very best cut diamond with ultimate sparkle and size appearance.
Timing matters
When would you like to propose or receive the ring? This will help us select the best options for your timeline.
The search is on!
Tell us where are you in the process so we can make your experience as efficient as possible.
How did you hear about Kwiat?
Let’s get serious
If you’d like personal assistance, our concierge, Megan, can get in touch. If you’d prefer to learn more about how to choose the most beautiful diamond, we’ll share our exclusive four-part email guide.
Continue your Mine to Shine journey with us
Our Kwiat concierge will be in touch to discuss Mine to Shine in detail, ensuring it aligns perfectly with your preferences.
Share your email for mine to shine details
Be part of something truly unique. Share your email, and we'll send you details about Mine to Shine – a program where your ring will be as one-of-a-kind as your love story.
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.


We’re standing by to answer your questions.

Please note, we are unable to reserve these pieces, so shop now to make them yours.

Enter your email and we’ll send you a list of the items in your shopping bag.

Kwiat Summer Collections


Catch the sun in Kwiat diamonds, perfectly cut for maximum brilliance.


Exquisite Kwiat diamond necklaces are available in so many shapes, lengths, and styles. Decisions, decisions.


Create a layered look with just one piece. Wear as a bold fashion statement or an unconventional wedding ring.


There are so many reasons to love diamonds. The mesmerizing sparkle. The enduring romance. The remarkable durability.


We first created the American Beauty necklace in the 1950s. The rose-inspired collection continues to blossom today.


Diamonds appear to float, set along precious metal strands in our Starry Night collection.


ASHOKA® diamonds have a distinctive faceting pattern that creates a dazzling, prismatic sparkle rivaling the sun’s rays. ASHOKA® is available in the U.S. exclusively from Kwiat.


New diamond designs reflect the joyful mood of spring — pile them on, mix metals, embrace brilliance.


All stones are not the same. Kwiat Diamonds look bigger and brighter — all the better in multiples.


The perfect companion for Kwiat diamonds: exquisite gemstones in luscious hues.

We adhere to the strictest standards with unsurpassed honesty and integrity.

We maintain the highest standards for diamond procurement.

All Kwiat diamonds are graded by the GIA and are accompanied by a GIA certificate.


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.


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.



The sun is shining on this beautiful Memorial Day Weekend, and we’re celebrating with our best diamond blooms. 💐
Our beloved Starry Night rivière is now available in a larger size. It’s the perfect necklace to wear throughout this weekend’s festivities — and all summer long!

#diamondnecklace #diamondtennisnecklace
Will you be a classic bride, or are you dreaming of an engagement ring style that’s a bit edgier? Our Kwiat Tiara Diamonds — including the Kwiat Emerald Cut and Fred Leighton Round shown here — are cut to suit any style.

#diamondengagementring #emeraldcutdiamond #oldeuropeancut
Bezel-set bracelets, done two ways. We’d ask you to choose, but they look so good together...

#diamondbracelets #bezelsetting #diamondtennisbracelet
When choosing Mine to Shine, you can expect a luxury bespoke experience, complete with regular video updates of your diamond’s progress that culminate in a complete journey video. Watch here as Nikki’s Kwiat Cushion is transformed into her dream ring featuring a hidden halo and pavé band... and join us in wishing her and Saverio a lifestime of bliss!

#enegagementrings #engagementringideas #engagementringgoals
If your engagement ring is feeling lonely, why not give it some sparkly new right-hand friends? ✨ 

#cushioncutengagementring #cushioncutdiamond #engagementringgoals
Did you know today is National Chocolate Chip Day? We didn’t need an excuse to enjoy a sweet treat... but we’ll take it! 

#diamondring #diamondbracelet #nationalchocolatechipday
Gift your grad something they’ll cherish. A simple diamond pendant is the perfect starter piece for every jewelry collection, and it will be worn for a lifetime.

#diamondpendant #diamondnecklace
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