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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.

Covid 19 Reopening

Kwiat Is Ready to Welcome You Back

These last few months have been a trying time for us all. We hope that you and your families have remained safe and well. As New York begins its process of reopening, we look forward to welcoming you back to our Madison Avenue flagship store on Tuesday, June 23. Here is an overview of what we are doing to provide you with a convenient and safe shopping experience.

Many Ways to Shop With Kwiat

  • In-Store Visit – Call ahead for a private appointment or simply drop in at your convenience
  • In-Home Appointment – By appointment, we can bring the Kwiat experience to you.
  • Virtual Consultation – Speak with a member of our team via FaceTime or Zoom
  • Online Shopping – Browse our website and communicate with our concierge via [email protected]
  • Curbside Pickup – work with our team and we can have your selection prepared to deliver to you personally outside our store

Protecting the Safety of our Community

  • Face Coverings
    • We ask that all visitors to our store wear face coverings at all times
    • Kwiat sales associates will wear face coverings at all times in the store and when working with clients
  • Social Distancing
    • Please maintain a social distance of at least 6 feet during your visit
    • Our associates will monitor store occupancy to ensure a comfortable and safe environment
  • Sanitization
    • Hand sanitizer will be available upon entry to the store
    • Associates will sanitize their hands regularly and prior to each new client meeting
    • Jewelry will be disinfected with a UV wand to ensure hygienic handling
    • All surfaces will be thoroughly cleaned several times daily
  • Security
    • For the security of the store and our team members, we may ask you to briefly and safely remove your face covering for our security camera just prior to entering the store
  • Store Hours
    • Monday Through Saturday from 10:30AM to 6:00PM

In moments like these, we are grateful for the people in our lives. We appreciate your loyalty to Kwiat over the years, and we are eager to help you celebrate life’s milestones.

With best wishes,
The Kwiat Family


Discover Kwiat Diamond Jewelry in person at one of our flagships. Walk-ins are welcome, however, for a more personalized, bespoke shopping experience, appointments with a Diamond Concierge are encouraged.

Kwiat and Fred Leighton Salon in NYC, Madison Avenue


Kwiat NYC Flagship
773 Madison Avenue (On the corner of East 66 Street)
New York, NY 10065
Mon – Sat: 10:30AM – 6PM

Kwiat, Fred Leighton, and Ashoka at the Wynn Hotel in Las Vegas


Kwiat Flagship at the Wynn
3131 South Las Vegas Boulevard
Las Vegas, NV 89109
Sun – Thurs: 11AM – 7PM
Fri – Sat: 11AM – 9PM

Visit Our Local Partners


We work with known and trusted jewelers all over the country so that you can preview Kwiat jewelry at locations near you. Click below to find your closest jeweler.


Contact Us

NEW YORK, NY 10065