21 Round-Cut Engagement Rings That Will Never Go Out of Style

This classic ring style has a timeless appeal you'll cherish forever.
round cut engagement rings
Dobrina Zhekova - The Knot Contributor.
by Dobrina Zhekova
Dobrina Zhekova - The Knot Contributor.
Dobrina Zhekova
The Knot Contributor
  • Dobrina writes about all things fashion, wedding attire and style for The Knot.
  • Dobrina has over a decade of editorial experience in print and digital media in Europe and the U.S.
  • Dobrina has an M.A. in Journalism from Craig Newmark Graduate School of Journalism at CUNY.
Updated Nov 28, 2021
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Timeless, sophisticated, versatile—we could go on and on about what makes round-cut engagement rings the most popular and purchased ring style. Thanks to its 58 facets cut to reflect maximum light, this classic diamond shape also has megawatt sparkle.

It's no wonder some of the most iconic sparklers are round-cut engagement rings. While Julia Stiles and Mila Kunis rock simple round-cut diamonds on delicate bands, fellow actresses Olivia Wilde and Natalie Portman said "yes" to more glamorous halo settings. And that's the beauty of this super versatile diamond—they work in modern and minimalistic settings as well as more elaborate ones.

Read on for a guide to round-cut engagement rings, plus editor-approved picks you can shop right now.

What Is a Round-Cut Engagement Ring?

Round-cut diamonds have a uniform and symmetrical shape made up of 58 facets, which qualifies them as a brilliant cut. The traditional round brilliant cut stones were deliberately designed with 58 facets to give them their distinct sparkle. Simply put, no other diamond cut can compare with the brilliance of a round-cut diamond.

Round-cut diamonds account for about two-thirds of all diamonds sold, making them the most popular diamond shape on the market. While they are the most popular and widely available option on the market, they are also the most expensive. Why the hefty price tag? Demand and what is called rough wastage. Up to 38% of a stone is wasted when a diamond is cut into a round shape, making it the most expensive diamond shape to create.

What to Look For in a Round-Cut Engagement Ring

Before purchasing a round-cut diamond, pay attention to the the 4Cs (cut, color, clarity and carat). The cut grade of a round diamond is very important, as it determines the stone's brilliance. You want a proportionally cut diamond that isn't too shallow or too deep. However, a round-cut diamond can easily conceal mild color variations or inclusions (read: internal flaws) because of its brilliance. So if you aren't obsessed with buying a colorless, flawless stone, you could get away with a really well-cut round diamond with slightly lower color and clarity grades—and save yourself some money in the process. Pro tip: If you're buying a loose stone, you can ask a GIA-certified expert to evaluate it before you have it set.

Why Choose a Round-Cut Engagement Ring?

For over 100 years, diamond cutters have been perfecting the process for cutting round diamonds. Thanks to their 58 facets, the brilliance of a round-cut diamond is unparalleled. So, if you're in the market for a center stone with megawatt shine, this is the diamond cut for you.

Another huge pro of round-cut diamonds is their versatility. They look chic in solitaire settings, in modern bezel settings or framed by glamorous diamond halos. They also posses a timeless appeal that pairs well with any type of precious metal.

Round-Cut Engagement Rings You Can Buy Now

Feeling a round-cut diamond engagement ring right now? Shop some of our favorites, below.

Verlas Embellished Iconic Round Halo Ring

verlas round cut engagement ring with round diamond center stone round diamond halo diamond encrusted sides and white gold band

For maximum bling, opt for an exquisite halo engagement ring like this one. The round center stone is framed by a halo of pavé diamonds that continue onto the shoulders and shank of the 14K white gold band.

Mejuri Round-Cut Ring

mejuri round cut engagement ring with round peach colored morganite center stone two round side diamonds and plain yellow gold band

How gorgeous is this unique three-stone engagement ring? The asymmetrical gem arrangement features a prong-set peach-hued morganite and a duo of round brilliant cut diamonds. It's a stunning design cast in 14K yellow gold with plenty of character.

Vrai The Signature Bezel Ring

vrai round cut engagement ring with round diamond center stone and plain yellow gold band
A sleek polished bezel setting cast in 14K rose gold holds a round-cut diamond for a no-fuss modern look. Pair it with a clean metal wedding band for a minimalist effect.

Jenny Wu Lace Clio Diamond Ring

jenny wu lace round cut engagement ring with round diamond center stone white gold claw prongs and plain white gold wave band
A classic solitaire ring with a literal twist. Here, the round-cut center stone is accentuated with a twisted split shank that can be customized with pavé diamonds for extra bling.

Kwiat Round Brilliant Diamond Engagement Ring

kwiat round cut engagement ring with round diamond center stone yellow gold claw prongs and plain yellow gold band
You can't go wrong with a classic ring setting. This round-cut solitaire diamond engagement ring setting is timeless—and absolutely dazzling.

Tiffany & Co. Wave Three-Row Diamond Ring

tiffany and co round cut engagement ring with round diamond center stone yellow gold halo and three row plain yellow gold band
Calling all mermaids. The beauty of ocean waves inspired this nontraditional diamond engagement ring with a bezel-set round diamond set in 18K yellow gold.

Catbird Ruby Wings Ring

catbird round cut two tone engagement ring with round diamond center stone platinum claw prongs and ruby encrusted winged platinum band
An engagement ring as unique as your love story. This two-tone sparkler's striking design features rubies flanking an antique, round-cut GIA-certified European-cut diamond, all set in a one-of-a-kind platinum wing-inspired setting.

Gemvara Headlight Ring

gemvara round cut engagement ring with round diamond center stone and thick yellow gold band
Sometimes less is more. This single round diamond sits flush in a modern, polished 18K yellow gold band for an understated effect.

Kwiat Engagement Ring With a Round Diamond and Side Stones

kwiat round cut engagement ring with round diamond center stone baguette diamond sides white gold claw prongs and plain white gold band
Two words: sleek and chic. Tapered baguette side stones create a gorgeous contrast with a round brilliant center stone.

Vrai The Duet Ring

vrai round cut engagement ring with round diamond center stone and plain white gold split shank band

It doesn't get more fashion-forward than an X-shaped ring setting. Go plain or add pavé details for an extra-glam touch.

Charles & Colvard Round Caydia Lab Grown Diamond Classic Three Stone Engagement Ring in 18K Rose Gold

charles & colvard round cut engagement ring with three round diamond center stones rose gold claw prongs and plain rose gold band
Symbolizing your past, present and future, this three-stone engagement ring features three lab-created diamonds with a total carat weight of 2 ctw. A sleek, polished rose gold setting adds whimsy to this timeless design.

Brilliant Earth Winding Ivy Diamond Engagement Ring

brilliant earth round cut engagement ring with round diamond center stone yellow gold claw prongs and marquise diamond encrusted yellow gold double twist band
An ethereal band in yellow gold is set with marquise diamonds for a nature-inspired look. However, the main event is an exquisite prong-set round-cut diamond (of course).

Tiffany & Co. Soleste Ring

tiffany and co. round cut engagement ring with round aquamarine center stone round diamond double halo and diamond encrusted white gold band
What's better than one halo? Two. A double halo of round diamonds highlights a stunning round aquamarine gemstone perfect for a March-born nearlywed.

Pamela Love Freya Ring

pamela love round cut engagement ring with ethically mined round diamond center stone and braided thick yellow gold band
A braided motif symbolizing the interconnectivity of two lives gives extra-special meaning to this antique-inspired engagement ring. An ethically-mined round-cut diamond sits in the center of this unique sparkler.

Blue Nile Cushion Halo Diamond Engagement Ring

blue nile round cut engagement ring with round diamond center white gold claw prongs round diamond halo and diamond encrusted white gold band
Enjoy the sophistication of a cushion-cut diamond ring setting and the striking brilliance of a round center stone with this glamorous engagement ring. It features a cushion-shaped diamond halo surrounding a round-cut diamond.

Kwiat Engagement Ring With a Round Diamond and Pavé

kwiat round cut engagement ring with round diamond center stone rose gold claw prongs round diamond hidden halo and diamond encrusted rose gold band
Let your gemstone take center stage in this glamorous cathedral engagement ring setting accentuated by pavé diamonds. A hidden pavé halo holds your diamond above the bridge, ensuring your bauble looks picture-perfect from all angles.

Barkev's Open Shank Ring

barkev's round cut bridal set with diamond center stone with marquise diamond halo and double diamond encrusted white gold bands
Bring on the bling. This marquise halo wedding set features an engagement ring with a prong-set round center encircled with diamond melees plus a matching wedding band.

Verlas My Encompassing Round Ring

verlas round cut engagement ring with round diamond center stone and plain white gold wave band
This dainty sparkler's 14K white gold shoulders embrace the round-cut diamond for a unique and very romantic look. Personalize this solitaire engagement ring with a special engraving.

Gemvara Double-Edged Ring

gemvara round cut engagement ring with round moissanite center stone and thick sterling silver band with jagged detailing
A round-cut moissanite floats in between the jagged shoulders of this architectural wedding band. Bonus: This ring is available in various precious metals and gemstones.

Arielle 1.57ct Pave Diamond Engagement Ring

greenwich st. jewelers round cut engagement ring with round diamond center stone vintage detailed yellow gold halo diamond encrusted sides and plain yellow gold band

This 18K yellow gold solitaire engagement ring comes with plenty of beautiful antique-inspired accents for the vintage lover. The center stone, a European-cut round diamond, is set in an etched bezel complemented by sparkly pavés on the tapered shoulders.

Brilliant Earth Octavia Ring

brilliant earth round cut engagement ring with diamond center stone baguette and round diamond halo diamond encrusted sides and plain white gold band
Fans of the Roaring '20s aesthetic, this one's for you. Baguette and round accent stones create the geometric halo of this Art Deco-inspired round-cut engagement ring.

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