The Prettiest Round-Cut Diamond Engagement Rings

If you want your engagement ring to be totally timeless, a round-cut diamond is probably the look for you. Whether you want yours set in a halo setting, as solitaire, or on a glittering pavé band, know that there's no wrong way to wear a round engagement ring. Round-cut engagement rings are the most popular to date, cornering nearly 75% of the diamond market. But just because it's the most popular doesn't mean that it's not unique.

Take a cue from celebrities like Olivia Wilde, Natalie Portman, and Lauren Conrad, all of whom radiate elegance in their everyday style, and all of whom also happen to wear gorgeous round-cut engagement rings, each with their own personal twist: Copy Olivia's style and add an element of color; take inspiration from Natalie, whose round stone is set in a twirling halo and pavé band; make like Lauren and go with a simple solitaire, set on a romantic rose gold band.

The beauty of round diamonds is that they are virtually brilliant-cut, and generally superior to fancy diamond shapes at the right reflection of light, making the most of their potential brightness. Basically, because the diamond is curved all the way around, you'll get the maximum light when looking at the ring from any angle. That's what makes them so sparkly an enticing. Plus, they pair nicely with any type of wedding band, which means you can go classic with your engagement ring and get a little more playful with your wedding jewerly. Who doesn't want options?

Sold on a round-cut diamond engagement ring? We'll help you sort through the many options available to you. Here, a selection of our favorite round-cut engagement rings.

Tiffany & Co.

Tiffany & Co. "The Tiffany Setting" Engagement Ring, from $12,900, tiffany.com

.

De Beers

De Beers "My First De Beers Aura" Solitaire Ring, $2,500, debeers.com

.

Wwake

Wwake Organic Crossover Diamond Ring, $3,645, wwake.com

.

Harry Winston

Harry Winston Solitaire, Round Brilliant Engagement Ring, from $7,900, harrywinston.com

.

Eva Fehren

Eva Fehren "The Rose Gold Infinity" Ring, price upon request, evafehren.com

.

Forevermark

Forevermark 18-Karat White Gold Beaded Diamond Ring, $1,500, neimanmarcus.com

.

Megan Thorne

Megan Thorne Solitaire "Imperial" Diamond Ring, $13,850, ylang23.com

.

Blue Nile

Blue Nile Classic Six-Prong Solitaire Engagement Ring, $580 (setting only), bluenile.com

.

Kataoka

Kataoka "Heart & Cupid" Ring Supreme, $5,680, kataoka-jewelry.com

.

Melissa Joy Manning

Melissa Joy Manning 14-karat Gold Diamond Ring, $375, net-a-porter.com

.

Tiffany & Co.

Tiffany & Co. Round Brilliant Three-Stone Engagement Ring, from $76,500, tiffany.com

.

Zydo

Zydo 18-Karat White Gold Mosaic Round Diamond Ring, $4,200, neimanmarcus.com

.

Blue Nile

Blue Nile "Riviera" Pave Diamond Engagement Ring, $1,190, bluenile.com

.

De Beers

De Beers "DB Classic" Trio Ring, from $7,100, debeers.com

.

Wwake

Wwake Small Round Solitaire Ring, $2,495, wwake.com

.

Jemma Wynne

Jemma Wynne 18-Karat Rose Gold Diamond Ring, $3,885, net-a-porter.com

.

Kataoka

Kataoka "Twisting Vine" Solitaire Ring, $4,680, kataoka-jewelry.com

.

Jade Trau

Jade Trau "Parasol 1," $6,400, 18-Karat White Gold Ring, jadetrau.com

.

Eva Fehren

Eva Fehren "The Premier" Ring, price upon request, evafehren.com

.

Anita Ko

Anita Ko "Orbit" Split Ring, $2,375, anitako.com

.

Estate Diamond Jewelry

Estate Diamond Jewelry Antique Diamond and Estate Ring, $14,000, etsy.com

.

Helzberg Diamonds

Helzberg Diamonds "Prima" Diamond Solitaire Engagement Ring, $599.99, helzberg.com

.

Ileana Makri

Ileana Makri Triple Solitaire Ring, $2,886.48, ileanamakri.com

.

Megan Thorne

Megan Thorne Two-Tone Diamond "Ribbon Crown" Ring, $2,475, ylang23.com

.

Jade Trau

Jade Trau "Astor 2" 18-Krat Gold Ring, $6,150, jadetrau.com

.

Estate Diamond Jewelry

Estate Diamond Jewelry Old European Diamond Engagement Ring, $32,000, etsy.com

.

Yannis Sergakis

Yannis Sergakis Adornments "La Pierre" Asymmetric Diamond Ring, $2,330, ylang23.com

.