7 Times Amanda Seyfried Stunned In Natural Diamonds
Discover how actress Amanda Seyfried elevates her style with breathtaking natural diamond jewelry both on and off the red carpet.
Amanda Seyfried attends the premiere of ‘The Testament of Ann Lee’ during the 2025 Toronto International Film Festival on September 9, 2025. (Getty Images)
Amanda Seyfried knows how to pick out a diamond that will bring her ensemble to a standout level. The Oscar-nominated actress has been promoting her upcoming film “The Testament of Ann Lee”, and has been on many red carpets lately, including the Venice Film Festival and the London Film Festival, where she has been sporting some stunning diamond jewelry.
Though she has worn an array of designers over the years, including Lorraine Schwartz, Cartier and Forevermark, as of late, she has been rocking some exquisite Tiffany diamond pieces to promote her new film.
Meet the Author
- Meredith Lepore is an accomplished writer and editor with over a decade of experience contributing to Travel + Leisure, The Zoe Report, Refinery29, InStyle, Marie Claire, and more — with work cited by The New York Times and New York Magazine.
- Former deputy editor at Ladders and editor-in-chief of The Grindstone, with a strong focus on career, entrepreneurship, and women’s leadership.
- Holds a master’s degree in Magazine, Newspaper, and Online Journalism from Syracuse University’s Newhouse School, and has interviewed leading figures including Martha Stewart, Zooey Deschanel, Tory Burch, Mindy Kaling and Lupita Nyong’o.
Often working with stylist Elizabeth Stewart, whose clients include Julia Roberts and Jessica Chastain, Amanda Seyfried has had some stunning diamond looks over the years, like the Forevermark double-halo drop yellow diamonds she wore to the 2021 Academy Awards ceremony. “She has really great taste, she’s very cool and we work together on everything,” Stewart told E! Online of working with the Mean Girls star.
You can expect to see Amanda Seyfried a lot more this year, as her role in the film is already getting Oscar buzz, and she has another film coming out in December as well, called “The Housemaid,” co-starring Sydney Sweeney.
Let’s take a look at some of Amanda Seyfried’s most significant diamond moments over the span of her 20-year career.
Amanda Seyfried Wore a Tiffany & Co. Diamond Choker to the 2025 London Film Festival
For the premiere of her film “The Testament of Ann Lee” at the London Film Festival, Amanda Seyfried made headlines with a black and white tulle ballgown with a floral embellishment by Richard Quinn. But the show-stopping part of the ensemble was the Tiffany & Co. diamond choker with a large pendant she paired with it. She also wore delicate diamond stud earrings to complete the look. Just give her the Oscar now!
Amanda Seyfried Wore Multiple Tiffany & Co. Pieces at the 21st Zurich Film Festival
The actress decided to wear another black and white dress, but this time chose one by Givenchy, for the green carpet of the 21st Zurich Film Festival premiere of “The Testament of Ann Lee.” An avid fan of Tiffany & Co. pieces, this time she went with the subtle but elegant Knot Double Row Necklace in white gold with diamonds. She also wore diamond stud earrings and a Knot Double Row ring in white gold and diamonds, also by Tiffany & Co.
Amanda Seyfried Wore Tiffany & Co. at the 2025 Toronto International Film Festival
Amanda Seyfried cannot get enough of Tiffany & Co. For the premiere of “The Testament of Ann Lee” during the 2025 Toronto Film Festival, she wore this stunning 91-carat Tiffany & Co. necklace. This reimagined take on Jean Schlumberger’s iconic Bird on a Rock design features 59 carats of diamond-encrusted swallows, gracefully linked to a 32-carat emerald-cut aquamarine, all set in an exquisite combination of platinum and 18k gold. Paired with a sleek low ponytail and a delightful black dress covered in beads. “The Dropout” star also wore her signature diamond stud earrings and a Tiffany Victoria band ring with diamonds set in platinum.
Amanda Seyfried Wore Tiffany & Co. at the 2025 Venice Film Festival
Amanda Seyfried wore a strapless button-down Prada gown with a red bow, styled by Elizabeth Stewart at the 2025 Venice Film Festival.
The actress added a velvet choker ribbon to her ensemble, featuring a Tiffany & Co. Bird on a Rock brooch with a diamond weighing over 11 carats attached. Seyfried completed her look with a pair of natural diamond stud earrings and a Bird on a Rock by Tiffany ring in platinum and 18-karat gold with an unenhanced 11-carat yellow sapphire, rubies, and natural diamonds.
Amanda Seyfried Wore Chaumet Diamonds to the 2024 Met Gala
Amanda Seyfried was a vision in a silver custom sustainable Prada gown at the 2024 Met Gala. She teamed her ensemble with an extravagant natural diamond wreath tiara and earrings from Chaumet. The Mamma Mia star specifically asked her stylist, Elizabeth Stewart, for a sustainable dress for the event, according to the New York Times. Stewart understood the assignment as the dress was made from leftover deadstock fabric. “If I’m going to go to the Met ball there has to be solar panels on my head, or I’m not going,” she joked.
Amanda Seyfried at the Time 100 Gala in a Custom-Made Choker Made With Ethically Sourced Diamonds
Amanda Seyfried sported an extraordinary Almasika collar with a languid line of 14 carats of diamonds ethically and sustainably sourced from Botswana at the Time 100 Gala in 2022. The piece was created specifically for Seyfried as a part of a project initiated by De Beers and the RAD Advocacy group to amplify the voices of talent on global red carpets. Founder and designer of the brand, Catherine Sarr, said at the time, “To see her in my design for the Time 100 awards was a beautiful moment for me and the ideal time for this collaboration to come to fruition.”
Amanda Seyfried Wore Lorraine Schwartz Diamonds at the 2013 SAG Awards
Amanda Seyfried made her first appearance at the SAG Awards as a nominee in 2013, wearing a navy Zac Posen gown and a statement-making, long, Art Deco-inspired Lorraine Schwartz necklace running down her front. Its lavender jade centerpiece was set in white gold and diamonds and hung on an extra-long diamond chain.
