Trends

Kaley Cuoco Has a Three-Stone Engagement Ring With a Twist

TrendsAug 22, 2024

Kaley Cuoco Has a Three-Stone Engagement Ring With a Twist

The three-stone ring was designed by Shahla Karimi Jewelry and represents Cuoco, her fiancé Tom Pelphrey, and their child.

Kaley Cuoco, Tom Pelphrey, Matilda Pelphrey, and the engagement ring
“Ozark” actor Tom Pelphrey proposed to “The Big Bang Theory” star Kaley Cuoco with an 18-karat yellow gold ring featuring a cushion-cut white diamond flanked by two yellow diamonds. (Photo courtesy of the designer’s Instagram @shahlakarimi_jewelry)
Los Angeles—Set off the wedding bells!

Kaley Cuoco, star of HBO Max’s “The Flight Attendant” and CBS sitcom “The Big Bang Theory,” received a unique three-stone engagement ring from her boyfriend,  Tom Pelphrey, an actor in “Ozark,” last week.

Cuoco announced the couple’s engagement in an Instagram story, thanking designer Shahla Karimi of Shahla Karimi Jewelry for “creating this once in a lifetime slice of perfection.”

The ring centers a cushion-cut white diamond flanked by two yellow diamonds. National Jeweler estimates the total weight of the ring to be about 4 carats.

Each stone represents a member of the couple’s family—one for Cuoco, one for Pelphrey, and one for their 1-year-old daughter Matilda, or “Tildy”—Cuoco explained in a comment on the New York City-based jewelry designer’s Instagram.


The stones, set in 18-karat yellow gold, are not arranged in a typical three-stone setting.

On one side, a baguette-cut diamond is set north-south, while on the other side, an emerald-cut diamond is east-west.

The meaning behind the unique orientation is unknown.

Karimi, who worked with Pelphrey to design the ring, said she was not authorized to publicly share any details on the ring beyond what was posted on social media.

 Related stories will be right here … 

Karimi also designed the ruby rings worn by Taylor Swift to the 2024 Super Bowl. Hailey Bieber, Reese Witherspoon, Gabrielle Union, and Kasey Musgraves are among the other celebrities who own pieces from her brand.

Cuoco and Pelphrey met in 2022 because they have the same management team, explained Cuoco in an interview with Extra.

Their manager took Cuoco as her guest to the “Ozark” premiere, where she met Pelphrey, experiencing what she described as love at first sight.

Three-stone rings have been rising in popularity since 2017, when Prince Harry proposed to Meghan Markle with a cushion-cut white diamond ring flanked by two round brilliant diamonds.

The engagement ring style grew in popularity, with noteworthy celebrities like Jennifer Lopez and Heidi Klum having opted for a three-stone ring.

It remains popular in 2024, with experts in the jewelry industry noting it as one of the engagement ring trends for the year.

The Latest

Amber Pepper
MajorsNov 21, 2025
Natural Diamond Council Names New CEO

Amber Pepper’s main focus will be on digital innovation and engaging younger consumers.

Rough diamonds from the Gahcho Kue mine in Canada
SourcingNov 21, 2025
De Beers’ Branded, Traceable Diamonds Roll Out to 19 Retailers

Called “Origin by De Beers Group,” the loose, polished diamonds are being sold in a total of 30 stores in the United States and Canada.

Melissa Kaye Rocky Infinity Emerald Necklace
CollectionsNov 21, 2025
Piece of the Week: Melissa Kaye’s ‘Rocky Infinity’ Necklace

The lariat necklace features a 4.88-carat oval-cut Zambian emerald in 18-karat yellow gold.

Recipients Collage 2025 - NJ (1872 x 1050 px) (1872 x 1052 px).png
Brought to you by
Impacting Tomorrow Today

How Jewelers of America’s 20 Under 40 are leading to ensure a brighter future for the jewelry industry.

Phillips auction of The Vanderbilt Sapphire brooch
AuctionsNov 20, 2025
Vanderbilt Jewels Shine at Phillips Sale, Pink Diamond Withdrawn

A 43-carat sapphire brooch from the Vanderbilt collection was the top lot of the Geneva sale.

Weekly QuizNov 20, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Rebecca Rau Jewels Green Flame Necklace
CollectionsNov 20, 2025
Rebecca Rau Jewels Debuts With ‘Then & Now’ Collection

Rau is a fourth-generation art and antique dealer from M.S. Rau gallery whose first jewelry collection merges artifacts with modern design.

Purvi Shah
Policies & IssuesNov 20, 2025
RJC Names New Executive Director

Former De Beers sustainability leader Purvi Shah will take over the role in February 2026.

roseco-catalog.png
Brought to you by
Roseco Releases New Full-Line Catalog

Roseco’s 704-page catalog showcases new lab-grown diamonds, findings, tools & more—available in print or interactive digital editions.

WatchesNov 20, 2025
LVMH Takes Minority Stake in Citizen Group-Owned Movement Maker

La Joux-Perret is based in La Chaux-de-Fonds, Switzerland, and makes solar quartz as well as mechanical watch movements.

Julia Griffith
GradingNov 20, 2025
Julia Griffith Joins SSEF as Head of Education

She previously taught at Gem-A and is the founder of The Gem Academy.

Helena Bonham Carter in Larkspur & Hawk Once Upon a Time Campaign
CollectionsNov 19, 2025
Larkspur & Hawk Celebrates 25 Years With Helena Bonham Carter Campaign

The British actress and her daughter modeled pieces from the brand’s new “Palette” capsule for its “Once Upon a Time” holiday campaign.

Google reviews on a phone screen and a laptop
TechnologyNov 19, 2025
Google Has a New Form for Reporting ‘Review Bombing’ Attacks

Plus, the tech giant shares the steps retailers should take if they believe they’re a victim of a review extortion scam.

Shaftel Diamonds logo and jeweler’s bench
IndependentsNov 19, 2025
Houston Jeweler Keith Shaftel Retires, Next Generation Steps In

Danny and Gaby Shaftel are now Shaftel Diamonds’ CEO and chief operating officer, respectively.

Jewelry from NYC Jewelry Week 2024
Events & AwardsNov 18, 2025
NYC Jewelry Week 2025: 12 Must-See Events

With more than 140 activations taking place in New York City now through Nov. 23, these 12 events are can’t-miss moments.

Lugano Diamonds Greenwich Connecticut store
MajorsNov 18, 2025
Lugano Diamonds Files for Bankruptcy, Looking for Buyer

The Chapter 11 filing follows the resignation of CEO Moti Ferder, who stepped down after an investigation into the company’s finances.

Kathleen Ryan Dreamhouse Bad Fruit sculpture
Events & AwardsNov 18, 2025
A Giant, Bejeweled Moldy Berry Is on Display in LA

The artwork is part of an exhibition featuring works by Kathleen Ryan, an artist known for her gemstone-studded rotting fruit sculptures.

Rough diamonds from the Gahcho Kué mine in Canada
SourcingNov 18, 2025
Another Diamond Company CEO Steps Down

Mark Wall, president and CEO of Canadian mining company Mountain Province Diamonds, will vacate his position next month.

Suspects in murder of father and son jewelers in Chicago
CrimeNov 17, 2025
Police Searching for 2 Suspects in Murder of Father, Son Jewelers

Faustino Alamo Dominguez and his son, 25-year-old Luis Angel Alamo, were gunned down following an armed robbery at their jewelry store.

Jeffrey Bennett
GradingNov 17, 2025
IGI Announces New President of North America

Tiffany & Co. veteran Jeffrey Bennett has stepped into the role.

Robbins Brothers Pasadena store exterior
MajorsNov 17, 2025
Look Inside Robbins Brothers Fine Jewelers’ New Pasadena Flagship

The showroom is located in a historic 1920s building in the Playhouse District.

Rolex Perpetual 1908 watch with 18-karat yellow gold bracelet
Policies & IssuesNov 14, 2025
U.S., Switzerland Reach Deal That Drops Tariff to 15%

The Swiss government announced the deal, which cuts the tax on Swiss imports by more than half, on social media Friday morning.

Napoleon Bonaparte diamond brooch
AuctionsNov 14, 2025
Napoleon’s Diamond Brooch Blows Away Auction Estimates

A buyer paid $4.4 million for the piece, which Napoleon wore on his hat for special occasions and left behind when he fled Waterloo.

Buccellati Étoilée earrings
FinancialsNov 14, 2025
Richemont’s Q2 Jewelry Sales Up 12%

Plus, how tariffs and the rising price of gold are affecting its watch and jewelry brands.

Silvia Furmanovich x Mellerio Butterflies in Flight Jewelry Box
CollectionsNov 14, 2025
Piece of the Week: Silvia Furmanovich’s ‘Butterflies in Flight’ Jewelry Box

Furmanovich designed the box to hold Mellerio’s “Color Queen,” a high jewelry collection consisting of 10 rings.

JCK Las Vegas trade show
Events & AwardsNov 14, 2025
JCK Names New Event Director

Jennifer Hopf, who has been with JCK since 2022, will lead the execution of the long-running jewelry trade show.

Adler’s Jewelry storefronts New Orleans
IndependentsNov 13, 2025
127-Year-Old New Orleans Jeweler to Close

Adler’s Jewelry is set to close its two stores as 82-year-old owner Coleman E. Adler II retires.

Green Lake Jewelry Works Seattle interior
IndependentsNov 13, 2025
Green Lake Jewelry Works to Move to New Seattle Studio

Founder Jim Tuttle shared how a dedication to craftsmanship and meaningful custom jewelry fueled the retailer’s double-digit growth.

×

This site uses cookies to give you the best online experience. By continuing to use & browse this site, we assume you agree to our Privacy Policy