Paris Hilton is engaged to Carter Reum, and an expert estimates her ring is worth at least $1 million

• Paris Hilton is engaged to Carter Reum.
• Hilton shared on Wednesday that Reum proposed during a vacation on a private island.
• Experts told Insider Hilton's engagement ring could be worth at least $1 million.

Paris Hilton and her boyfriend, Carter Reum, are engaged.

On Wednesday, Hilton shared on Instagram that Reum proposed during a vacation celebrating her 40th birthday on February 13.

"When you find your soulmate, you don't just know it. You feel it," she wrote in the caption of her post. "My love & I have been together since our first date, and for my birthday, he arranged a special trip to tropical paradise."

"As we walked to dinner along the beach, Carter led us to a cabana adorned with flowers and dropped to one knee," she continued. "I said yes, yes to forever. There's no one I'd rather spend forever with."

Reum dressed in an all-white suit to pop the question, while Hilton wore a Retrofete dress with a Loschy crown. According to Hilton's website, the two celebrated with family and close friends after Reum proposed.

Hilton also shared more photos and details about her engagement ring on her website. According to the description, her ring was designed by Jean Dousset, the great-great-grandson of Cartier, and "appears to be lit from within."

Hilton's website also says Dousset was inspired by the city of Paris, and that the unique ring is "framed by forms that resemble the vaulted glass ceiling of the Grand Palais," an exhibition hall and museum located on the Champs-Élysées.

A video shared to Hilton's YouTube channel shows the ring, named "Paris" after the 40-year-old model and singer, being hand-painted. Smaller diamonds can be seen on the band and sides of the ring.

Experts estimate the ring is worth at least $1 million

Apeksha Kothari, the COO of Rare Carat, said the engagement ring looks like it has a 10-carat emerald-cut diamond with two shield-cut side diamonds. She told Insider the ring could have cost $1 million.

"Around the diamond, on the prongs, and at the base of the ring's head are small pave diamonds giving this ring extra bling while maintaining a classy look," Kothari said, adding that Hilton's ring could be compared to Elizabeth Taylor's famous engagement ring from Richard Burton.

Estate Diamond Jewelry, on the other hand, told Insider the Art Deco-inspired ring looks like it features a 22-carat emerald-cut diamond that is flanked by 3-carat trapezoid-cut diamonds on each side. Estate Diamond Jewelry estimates the ring is worth $2.5 million.

Hilton has been open about her relationship with Reum

In December, Hilton posted a tribute to Reum on their 13-month anniversary.

"Happy 13 Month Anniversary my love! You make me feel like I'm in a Disney Fairytale. I love being your Princess!" she wrote in her Instagram caption. "Never in my wildest dreams could I have ever dreamed up a love so perfect and special! You are truly my dream come true!"

She added: "My dream guy forever and I'm so happy and grateful that I was custom-made for you and you for me."

During an interview on the LadyGang podcast in September 2020, Hilton said she was planning on using eggs she had frozen years ago to try to conceive twins with Reum. She said she would name a daughter London, and plans to gift her "iconic pieces" of clothing to her.

Representatives for Jean Dousset, Paris Hilton, and Carter Reum did not respond immediately to Insider's request for comment.