Radiant cut diamonds are rectangular with cut corners similar to emerald cuts, but unlike emerald cuts, they feature a brilliant cut faceting pattern that gives them exceptional brilliance and sparkle. Radiant diamonds are ideal for those who love a rectangular shape but want the traditional brightness they expect in a diamond. When worn in a ring, the rectangular shape can elongate the finger and often appears larger than other diamond shapes. Radiant cut diamonds are a newer shape, first developed in New York City in the late 1970s, and have steadily grown in popularity among modern jewelry lovers.

While the original radiant cut brought brilliance to a rectangular shape, the Kwiat Radiant takes it even further. Perfected through precise cutting and proprietary standards, the Kwiat Radiant is extraordinarily bright and displays the ideal rectangular proportions — never too long or too short — with distinctive, elegant cut corners. Each Kwiat Radiant diamond is meticulously faceted and receives GIA Excellent grades for polish and symmetry, a rarity for this shape. Its unique faceting pattern combines brilliant cut and step cut techniques, creating exceptional brilliance and maximum sparkle. Thanks to this precision cutting, the Kwiat Radiant shows pure brightness and fire across the entire diamond, with no bow tie effect, windowing, or dark areas, and appears larger than typical radiant cut diamonds of the same carat weight.

The Strictest Diamond Cutting Standards

Even when two diamonds share the same GIA color and clarity grades, they can differ dramatically in brilliance. That’s because the most important factor for a diamond’s sparkle is the cut, which determines its brightness, fire, and scintillation. Kwiat upholds the world’s strictest diamond cutting standards to ensure every stone achieves exceptional brilliance.

The Kwiat Radiant diamond is expertly cut with precise, consistent faceting that keeps carat weight in the right places and creates the perfect balance of fire, brightness, and scintillation. Each diamond is crafted with the ideal length-to-width ratio, making it appear larger than other radiant cut diamonds of the same carat weight. Thanks to its superior cut, a Kwiat Radiant also appears whiter than its GIA color grade suggests. Simply put, no radiant diamond sparkles more than a Kwiat Radiant.

Kwiat Radiant Diamonds vs. Typical Radiant Diamonds: Key Differences and Benefits

  • Ideal Proportions for Maximum Visual Size: Many radiant-cut diamonds on the market are too square or stubby, with length-to-width ratios under 1.2. These short, unattractive shapes often carry excess weight on the underside of the diamond, causing the stone to look smaller than its actual carat weight. Poorly cut corners can also make radiants resemble princess cuts instead of the elegant rectangular shape that defines a true radiant cut.
  • By contrast, Kwiat Radiant diamonds are always crafted to strict, ideal length-to-width ratios for a beautifully elongated, perfectly proportioned rectangular shape. Each diamond features distinctive, elegant cut corners, ensuring it looks like a true radiant and maximizing spread so it appears larger for its carat weight.
  • Superior Cut Quality for Exceptional Brilliance: Cut quality is the most important factor affecting a diamond’s brightness, fire, and scintillation. Many typical radiant diamonds are poorly faceted to preserve weight during cutting, resulting in unattractive patterns, bow-tie effects, dark areas, or a dull, lifeless look. These badly cut radiants fail to return light to the eye, making the diamond appear small and lacking in brilliance.
  • Kwiat Radiant diamonds are perfectly cut with precise angles, proportions, and facets, achieving a GIA Excellent grade for polish and symmetry — a rarity among radiant cuts. Each Kwiat Radiant features a unique faceting pattern that combines brilliant cut and step cut techniques, producing pure brightness, exceptional fire, and maximum sparkle. The precision cutting eliminates bow-tie effects, windowing, and dark spots, ensuring a radiant that looks whiter, brighter, and larger than typical radiant-cut diamonds of the same carat weight.

A CLOSER LOOK

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My name is Greg Kwiat, and I want to help you learn everything you need to know to buy a diamond. I’d like to introduce you to the Kwiat Radiant, the most exceptional radiant-cut diamond in the world. Let’s explore what makes the Kwiat Radiant extraordinary and how we have perfected the art of cutting this classic shape. Radiant cut diamonds are rectangular in shape with cut corners similar to the emerald cut, but different from the emerald cut, they’re faceted with a brilliant cut pattern, which gives the diamond a much greater brilliance and sparkle. Radiant diamonds are perfect for those who love the rectangular shape and want the more traditional brilliance they see and expect in a diamond. When worn in a ring, the rectangular shape can seem to elongate the finger and will often look larger than other shapes. Radiants are one of the newer diamond shapes in the market, originally developed in New York City in the late 1970s. The popularity of the cut has steadily grown over time and continues to have a strong appeal to the modern jewelry lover. With over 100 years With the diamond cutting skill and experience, we have created the Kwiat Radiant, perfectly cut and extraordinarily bright. The Kwiat Radiant is the ideal rectangular shape, not too long and not too short. It has distinctive and elegant cut corners. It is perfectly cut and faceted with excellent polish and excellent symmetry, a rarity in stones of this shape. The Kwiat Radiant has a unique faceting pattern, combining both the Brilliant Cut and Step Cut techniques to give the diamond a true brilliance and maximum sparkle. And because of the precision of this faceting, the Kwiat Radiant is pure brightness and fire throughout the stone, with no bow tie effect, windowing or dark spots, and a size appearance that is larger for its carat weight. To truly understand why the Kwiat that radiant is so exceptional, it helps to compare it to lesser quality radiants that other jewelers cut and sell. There are two primary problems when it comes to subpar radiant cuts. The first is that the shape of many radiants are too short. The second issue is that the a faceting pattern is often poorly done, leading to a bow-tie effect, darkness, or a general lack of proper brilliance. Let’s start with the shape of the diamond itself. The most attractive radiant diamond will be beautifully elongated and properly proportioned. When speaking about the shape of a radiant-cut diamond, we refer to the length to width ratio, which is calculated by dividing the millimeter length of the diamond by its millimeter width. The majority of the radiant-cut diamonds in the market range from square to stubby and are simply less attractive. Length to width ratios under 1.2 typically indicate a stone that is shorter than the ideal shape. The closer the ratio gets to 1.0, the closer the diamond is to a square shape. Square and stubby shapes typically carry excess weight on the underside of the diamond, where it does not add to the visual size appearance, causing it to appear smaller. It’s also important that the corners of the radiant be elegant and properly cut. Radiants without proper corners end up looking more like princess cuts. Dimonds that are outside of the ideal shape range typically sell at discounted prices. By comparison, Kwiat Radiants are always cut to the perfect rectangular shape in very strict length to width range, never too short. And because of this, they always have a larger size appearance for their carat weight. Another major difference between radiant-cut diamonds is the quality of the cut. In diamonds, cut is all about the angles, proportions, and facets. And as with all shapes, the cut quality of a radiant-cut diamond is the critical element that will determine its beauty. When a radiant is well-cut, the diamond will be bright throughout the entire stone and exhibit a great degree of fire and scintillation. Most radiant diamonds in the market are faceted in a very unattractive way, mainly with the goal of saving weight in the cutting process or an attempt to compensate for a general lack of brilliance. Badly-cut radiants typically look small for their size, and they fail to return the maximum light to the eye, leading to a dull or lifeless or windowy appearance. The Kwiat Radiant is perfectly cut with excellent polish and excellent symmetry, and the result is pure brightness and fire throughout the entire diamond, and a diamond that looks larger for its carat weight. At Kwiat, all of our diamonds are cut to our rigorous technical and quality standards. With more than 100 years of diamond cutting experience, we make certain that every diamond in every shape is cut to be the most beautiful that it can be. The Kwiat Radiant is the most beautiful and perfectly-cut radiant diamond in the world.

Kwiat Radiant Engagement Rings: Exclusive Designs at Kwiat

By now you might be asking “Where can I buy the most brilliant radiant diamond ring?” For decades, couples seeking diamonds with noticeable sparkle have come to Kwiat. Not only do they adore our perfect radiant cuts, they also love the way we mount them in a variety of settings crafted in 18K gold and platinum, each designed to allow maximum light into the diamond to amplify its beauty. If you’re not sure how to choose a radiant diamond engagement ring, rest assured there are options to suit every taste. Whether you prefer a ring with a pavé or an east-west setting, with side stones, or simply a classic solitaire in a prong setting, Kwiat has many to choose from. Plus, you might also consider a Kwiat Radiant diamond eternity wedding ring to perfectly pair with your engagement ring.

Every Kwiat engagement ring is designed especially for its center stone and made explicitly for its wearer. Explore a selection of engagement rings featuring Kwiat Radiant diamonds. If you don’t see your dream ring, please get in touch; our concierge can discuss custom design options with you.

Kwiat Radiant Diamond Jewelry

The exclusive Kwiat Radiant diamond is not reserved for engagement rings. It’s also available in a range of jewelry designs ideal for any occasion. To start with, we suggest a radiant diamond solitaire pendant, which can be made in whatever size you want. And of course, there’s the quintessential tennis bracelet, with diamond after diamond — glamorous and effortless all at once.

Frequently Asked Questions About Kwiat Round Diamonds

What is the Kwiat Radiant diamond?

The Kwiat Radiant is an extraordinary radiant-cut diamond available exclusively through Kwiat. It is crafted to precise proprietary standards, achieving exceptional brilliance, fire, and an ideal rectangular shape with elegant cut corners.

How is a Kwiat Radiant diamond different from other radiant diamonds?

Unlike typical radiant-cut diamonds, the Kwiat Radiant is perfectly proportioned and meticulously faceted to maximize brightness and sparkle. Each diamond has excellent polish and symmetry, eliminating common issues like bow-tie effects, dark spots, or dullness.

Why does a Kwiat Radiant diamond appear larger than other radiant diamonds?

Thanks to its strict length-to-width ratio and precision cutting, the Kwiat Radiant distributes carat weight for a bigger visual size, making it appear larger and more impressive than standard radiant diamonds of the same carat weight.

“Is a Kwiat Radiant diamond ethically sourced?”

Like all Kwiat Tiara Diamonds™, Kwiat Radiant Diamonds are natural, conflict free, and ethically mined. Through our Mine to Shine experience, you can even choose your own rough stone and follow its journey from a known origin through cutting and polishing, to setting it in a ring designed just for you. For personal, one-on-one assistance choosing a Kwiat Radiant Diamond or any other kind of diamond jewelry, please reach out to our concierge.