Many celebrities with a round-cut diamond engagement ring know the deal. It’s the most popular shape for engagement diamond rings, with different settings, styles, and variations highly compatible.
Many jewelry fans love it for its circular shape, which enables light to enter and reflect the diamond from various angles. They bounce back to the viewer’s eye, which enhances light in a stunning display of brilliance and sparkle.
Round cut engagement rings are versatile and suit a wide range of styles and settings, from classic solitaires to intricate halo designs.
1. Mila Kunis
The That ’70s Show actress Mila Kunis received a beautiful round-cut diamond engagement ring from her hubby, Ashton Kutcher, in February 2014.
He was right in choosing that ring, which features a 2-carat round-cut solitaire diamond secured with 6 prongs and crowned on a golden band. The shoulder shanks feature arching up and down panels connected to the prongs underneath.
Mila and Ashton married on July 4, 2015.
2. Alison Brie
Alison Brie’s engagement ring is just as gorgeous as her! The ring features a 3-carat round cut diamond en-haloed with small white diamonds with a 4-prong setting, crowned on a lovely pavé gold ring. Experts place its actual cost at $150,000.
3. Brittany Snow
Brittany Snow and Tyler Stanaland may no longer be together, but her lovely diamond engagement ring is still a hot topic among fans and the press.
Her ring features a more than 2-carat, round-cut diamond secured by a 4-prong setting on a silver pavé band, and layered with small diamonds on its diameter. Jewelry experts priced the ring at $40,000.
4. Rosie Huntington-Whiteley
When Jason Statham proposed to Rosie Huntington-Whiteley in January 2016, she said yes to his gorgeous engagement ring that has a central round-cut diamond.
The ring has a 20th-century, flawless, vintage 5-carat diamond. It’s a proud gemstone from Neil Lane’s collection. A 4 double-prong secures the diamond, with a jeweled undergallery, and a string of small diamonds on each shank side, crowned on a platinum band.
Experts value the lovely ring at $350,000.
5. Kate Upton
Supermodel Kate Upton has a gorgeous engagement ring that features an 8-carat, round, brilliant-cut diamond centerpiece from her hubby, Justin Verlander. This custom Anita Ko creation has a halo of smaller diamonds and sits atop a pavé platinum band.
Jewelry experts have placed its value at over a cool $1.5 million.
6. Allison Williams
When German actor Alexander Dreymon proposed to Girls star Allison Williams in December 2022, he did so with a stunning ring. It features a round cut central diamond with 4 square-edged prongs and Art Deco-style side motifs. It has a string of small diamonds on its shank and a platinum band. They married in a secret ceremony in 2023.
7. Kate Bosworth
Kate Bosworth’s engagement ring from hubby Justin Long features a stunning 10-carat round-cut diamond secured with 6 claw prongs on a platinum ring. Experts have scrambled over the value of the ring, as it features a flawless and huge diamond centerpiece. The price range is from $500,000 to well over $800,000!
8. Lauren Conrad
Lauren Conrad’s engagement ring from her musician hubby, William John Tell, formerly of the band Something Corporate, features a 2-carat, round-cut diamond secured by a 4-prong setting on a yellow-gold band. Jewelry experts place its value at $40,000.
9. Miranda Kerr
Victoria’s Secret Angel Miranda Kerr’s engagement ring from Snapchat CEO Evan Spiegel has a dazzling 4-carat round-cut diamond centerpiece, secured with 4 prongs, with Art-Deco styled side baguette diamonds as its left and right shank motifs on a platinum band. Jewelry experts place its value at $75,000.
10. Carrie Underwood
Carrie Underwood and Mike Fisher’s engagement was almost overshadowed by her ring, a massive, 12-carat, round, brilliant-cut yellow diamond. It has a halo of smaller diamonds around it, and all set on a platinum band. It is one of the more expensive celebrity jewelry pieces, at a cool $1 million!
11. Michelle Obama
Former First Lady Michelle Obama received a gorgeous ring from former President Barack Obama when he proposed to her in 1991. The simple, elegant, and stunning ring features a 1-carat round diamond center, secured by six prongs and crowned on a yellow-gold band. The classic combination of a diamond and gold band gives it warm tones.
The former President later upgraded the ring with a 2.5-carat princess-cut diamond on a pavé platinum ring.
12. Jessie James Decker
Country star Jessie James Decker’s engagement ring from her NFL player hubby, Eric Decker, features a 2.5-carat round radiant-cut diamond with trapezoidal side diamonds on a thick platinum band. She often wears it with two pave ring wedding bands, creating a thick layer of sparkling elegance.
Jewelry experts place its value at $100,000.
13. Olivia Wilde
Olivia Wilde’s engagement ring from ex-hubby Jason Sudeikis is a unique, antique piece. This classic ring features a central 2-carat round-cut diamond with a halo of green emerald stones and a golden bezel setting on a gold band. The estimated price tag of the ring is at $80,000.
14. Troian Bellisario
Troian Bellisario’s engagement ring from hubby Patrick J. Adams features an estimated 2-carat round-cut solitaire diamond. It has a unique, intertwined style platinum band with the upper band covered in milgrain-styled motif with small diamonds. This vintage ring came from Andria Barboné Jewelry. Experts place its value at $30,000.
15. Romee Strijd
Model Romee Strijd’s engagement ring from her businessman, model, and TV presenter Laurens van Leeuwen, features a 4-carat round-cut diamond held secure with 4 prongs and set on a thin, delicate gold band. The minimal but elegant ring has a high-quality diamond, and experts have valued it at over $400,000.
16. Nicole Richie
Nicole Richie’s engagement ring from Good Charlotte singer Joel Madden is another one-of-a-kind custom. She collaborated with top jewelry designer Neal Lane.
The ring features a 4-carat round brilliant cut diamond in a bezel setting with an octagonal halo encrusted with smaller diamonds. Each side of the ring has a strip of smaller diamonds on its left and right shanks, and set on platinum band. Jewelry experts estimate its price tag of over $200,000.
17. Chiara Ferragni
Controversial blogger and influencer Chiara Ferragni’s engagement ring from rapper ex-husband Fedez has a large 2-carat round-cut solitaire diamond, with left and right pave diamond strip shanks set on white gold. This lavish ring has a price tag of $100,000.
18. Natalie Portman
Actress Natalie Portman and Black Swan choreographer Benjamin Millepied are no longer together, but her engagement ring remains a classic piece of celebrity jewelry.
Natalie’s ring has a 4-carat, round-cut diamond in a pavé double halo setting, on a pavé recycled platinum band. Benjamin collaborated with Jamie Wolf to create this amazing ring. All its components are from eco-friendly, sustainable, and conflict-free sources.
While experts placed the value at $35,000, they say the actual value is around $90,000.
19. Taraji P. Henson
Actress Taraji Henson and NFL player Kelvin Hayden announced their engagement on May 13, 2018, Mother’s Day. He proposed to her with a stunning ring that has a 4-carat round diamond on a 4-prong setting on a rose-gold band. Experts place its value at $80,000, but many estimates also put it at $350,000 if the diamond has high-level clarity and high quality.
20. Julia Stiles
Julia Stiles and Preston J. Cook announced their engagement on Christmas Eve of 2015. He proposed with a simple, minimalist, and elegant engagement ring that featured a 2-carat round diamond bezel-set in rose gold. The price tag estimate is at $35,000.
21. Mandy Moore
Mandy Moore and her beau, Taylor Goldsmith of the band Dawes, announced their engagement on September 11, 2017. He proposed with a hot ring that features a 4-carat round-cut flat diamond on a pave rose gold band.
Top jeweler Irene Neuwirth designed the ring, which has an elegant but understated look that Mandy likes, who is not big on jewelry. Jewelry specialists place the value at $100,000.
22. Maria Menounos
TV host Maria Menounos said yes to his long-term bf, writer and producer Keven Undergaro, on-air, during Howard Stern‘s SiriusXM radio show on March 9, 2016. Undergaro got down on one knee and proposed with this stunning ring designed by Jean Dousset.
Her ring features a 3-carat, round brilliant cut diamond with a “seamless” halo of diamonds and a pavé platinum band, both adorned with 220 brilliant-cut accent diamonds. Undergaro commissioned a hidden topaz stone under the ring, his birthstone.
23. Abigail Breslin
Lovely Signs, Little Miss Sunshine, and Scream Queens actress Abigail Breslin’s engagement ring from her beau, Ira Kunyansky, features a 3-carat round diamond in a six-prong setting on a thick, triple-row pavé platinum band of small diamonds.
The crypto investor proposed to her on February 22, 2022, or 2-2-22 at Geoffrey’s Restaurant in Malibu.
Jewelry specialists value this ring at a whopping $130,000. Abigail and Ira married on January 28, 2023, after a year-long engagement.
24. Emily Blunt
Emily Blunt’s engagement ring from John Krasinski features a 3-carat Edwardian diamond from Neil Lane, set in platinum, and crafted with side baguette diamonds on a platinum band.
He proposed to her in August 2009, and it was an unpublicized, private event that they kept from the press. The couple married on July 10, 2010.
This gorgeous ring has a price tag of $100,000.
25. Britney Spears
Britney Spears and Iranian model-actor Sam Ashgari had a brief but intense love affair, culminating in their September 12, 2021 engagement and marriage on June 9, 2022. Sam proposed to her at her home.
Her elegant ring has a 4-carat round brilliant cut diamond, set in a custom, raised Cathedral shank basket on a platinum band. This composition gives the ring a floating look. He also had the word “Lioness” engraved inside the ring, a tribute to his then-wife.
Jewelry experts price this gorgeous ring at $150,000 USD.
26. Caitriona Balfe
Irish actress and model Caitriona Balfe said yes to her music producer husband, Tony McGill, when he proposed to her on January 7, 2018.
He got down on one knee and presented this exquisite 3-stone ring that features a round-cut center diamond with two round-cut sapphire stones on each side on a gold band. Tony sourced them from two antique rings.
She debuted her gorgeous engagement ring at the 75th Golden Globe Awards in 2018. The couple later married on August 10, 2019.
Experts say the price tag of this ring at $40,000.
27. Emmy Rossum
Emmy Rossum’s engagement ring from her hubby Sam Esmail is a 1920s vintage Art Deco ring. It features a large, 4-carat round solitaire ring with 2 side tapered baguette diamonds on a platinum band.
He proposed to her in late August 2015, while she was in the bathtub, complete with a made-up newspaper that featured their dating history! Jewelry experts place its price tag at $150,000.
28. Lana Del Rey
Lovely Lana Del Rey’s engagement ring in March 2023 from music executive of Range Media, Evan Winiker is a stunner. It has a 3-carat center diamond in a 4-prong setting, with 2 smaller side diamonds also with a 4-prong setting each, set on a yellow gold band.
However, their love story was very short, as they called off the engagement later that same year. A shame as the ring has a price tag of $300,000, according to experts.
29. Rosalia
Hot Spanish singer Rosalia and ex-fiance, Puerto Rican singer and songwriter Rauw Alejandro, announced their engagement in March 24, 2023. It was in their music video, “Beso”, one of the three songs on their collab EP, RR.
Her ring features a 4-carat round brilliant diamond center stone, with a 4-prong setting and small, clustered diamonds on each side and RR initials on top of each other on its underside, with a tapered platinum band. Jewelry specialists place its value at over $100,000.
30. Amy Adams
Amy Adams’ Seamless Halo, set in platinum, with a perfect round brilliant cut center stone. Paired with our Angela set of three tri-colored eternity bands in pink, yellow and white diamonds, the sophisticated splashes of color became the complementary final touch that grace Amy’s hand to this day.
Amy Adams gave hubby Darren Le Gallo her resounding yes when he proposed to her in July 2008, after 6 years of dating. It features a 1-carat brilliant-cut round diamond ring with a “seamless halo”, another design and creation from Jean Dousset, his expertise as discussed earlier on Maria Menounos’ ring. The halo has small diamonds set on a pavé platinum ring.
The lovely duo married on May 2, 2015.
