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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.


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

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Benefits of Shopping with Kwiat


Money Back Guarantee

If you are not completely satisfied with your purchase for any reason at all, you may receive a full refund. Please contact [email protected] within 30 days of receipt to receive a return authorization number and return shipping label. Packages without a return authorization number cannot be accepted. Items purchased online may be also returned to Kwiat’s Madison Avenue flagship store with an original receipt or gift receipt.

Kwiat will accept merchandise for return only in unused, unaltered, and salable condition. Returns must be made in the original packaging with the Kwiat shipping tag attached. Kwiat cannot accept returns of engraved items or items that show signs of wear. Special orders and custom sized pieces may be exchanged (see more here). Kwiat reserves the right to refuse any returns.

Upon completion of the proper return procedures and a determination that the items are in original salable condition, Kwiat will issue a refund. Once an item has been received for return by Kwiat, either at the Kwiat Madison Avenue flagship or via mail, the return may take 3-5 business days to process, after which time a refund will be issued.

Please note: If your item arrives in damaged condition, contact [email protected] within 10 days of receipt to receive a return authorization number and return shipping label. Packages without a return authorization number cannot be accepted. You may also return the item to Kwiat’s Madison Avenue flagship store with the original receipt or gift receipt. Upon completion of the proper return procedures, Kwiat will issue a refund or exchange. Once an item has been received for return by Kwiat, either at the Kwiat Madison Avenue flagship or via mail, the return may take 3-5 business days to process, after which time a refund will be issued.

The Kwiat Certificate of Authenticity

All Kwiat jewelry is accompanied by the Kwiat Certificate of Authenticity. This certificate documents the characteristics 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.

A Kwiat Certificate of Authenticity can be requested at any time by providing us with the serial number, style number, and a copy of your receipt. Each jewelry style is also stamped with the Kwiat Tiara maker’s mark, ensuring the authenticity of the piece.

Limited Lifetime Warranty

At Kwiat, we pride ourselves on the unparalleled quality of our jewelry and we are pleased to offer a Limited Lifetime Warranty. In the rare event that you find an imperfection or defect, we invite you to send it back to Kwiat to be inspected by one of our master jewelers. If the defect is determined to have occurred during the manufacturing process, we’ll replace or repair the item at no cost to you.

Excluded from this Warranty are coverage of wear and tear and/or physical/accidental abuse; theft; loss; and loss of gemstones or diamonds. Repair, sizing, or servicing performed by anyone other than Kwiat will void this warranty. If the jewelry was neglected or abused, this Warranty becomes void. Original receipt is required for Warranty service.

The Limited Lifetime Warranty does not apply to or cover accidental loss, neglect, or theft of jewelry, diamonds, or gemstones. We recommend that you insure your jewelry for casualty or loss. Please note that your homeowner’s or renter’s insurance policy may not cover your fine jewelry; a separate insurance rider may be required.

Complimentary Appraisals

Kwiat is pleased to provide a free certified gemological appraisal for Kwiat jewelry. This document can be provided to your insurance company to verify the replacement value of your diamond or fine jewelry.

Complimentary Ring Sizing

Kwiat will perform free resizing for rings purchased from Kwiat within 30 days of the date of purchase. You may return the ring via mail (return shipping charges will be applied) or bring it to a Kwiat flagship store. Our ability to resize the ring depends on the ring style and the size increase or decrease needed. Certain styles are not able to be resized without compromising the ring’s design or quality. To be sure a ring is able to be resized, please email [email protected] before you ship it to us. Once a ring has been resized, it can no longer be accepted for return. Each ring purchase is entitled to one free resizing. Further resizing, or resizing needed after the 30-day window of purchase, will incur a fee.

Complimentary Lifetime Servicing

You can help ensure the beauty and longevity of your Kwiat jewelry by treating it to professional maintenance. Kwiat offers complimentary servicing for the lifetime of your jewelry. This includes cleaning, tightening of prongs to secure diamonds or gemstones, and an inspection of the item. Additional servicing and repairs will incur a fee. You may mail your jewelry to us for servicing (return shipping charges will apply) or bring it to a Kwiat flagship store.

Diamond Upgrades

If you purchase a diamond solitaire ring from Kwiat, you may trade it back to Kwiat toward the purchase of a larger diamond ring and receive the full value paid for the center diamond.

If you purchase diamond stud earrings from Kwiat, you may trade them back to Kwiat toward the purchase of a larger pair or higher color/clarity pair of stud earrings and receive the full value paid for the original pair of diamond studs. For full details about the diamond upgrade program, please contact [email protected].

Bridal Borrow

When you purchase an engagement ring or wedding ring from Kwiat, this program entitles you to reserve a selection of jewelry to wear on your wedding day or other milestone celebration. Please enjoy a 5-day reservation on jewelry valued at up to 100% of the purchase price of your engagement ring or wedding ring.

Fell in love with what you borrowed? Make it yours! As a client in the Bridal Borrow program, you’ll be offered exclusive pricing to turn something borrowed into something yours to treasure forever. To learn more, please contact [email protected].

Price match guarantee

If you are considering a purchase from and you see the exact same style being sold at another online retailer for less, we will match the price. If, within 30 days of your purchase of an item from, you find the exact same style being sold online for less, we will match the price by refunding you the difference. In either case, simply contact [email protected] with proof of the price difference as well as your proof of purchase if you’ve already bought the item.

Reliable Jewelry Insurance

Kwiat has partnered with Zillion, specialists in jewelry insurance, to provide protection for your Kwiat pieces. You’ll receive more comprehensive coverage than most renter’s and homeowner’s insurance policies offer, with worldwide coverage for loss, theft, accidental damage, and disappearance. Claims are fast and easy through Kwiat. Learn more.