Stephane Cardinale - Corbis/Corbis via Getty Helen Mirren made a grand arrival at the Cannes Film Festival during theColors of Timepremiere She wore fine jeweler Margot McKinney's Marina Collier, which features two green beryl stones and an aquamarine stone, all three of which total over 400 carats The stunning necklace first debuted at the TEFAF Maastricht premier fair in the Netherlands Helen Mirrenjust delivered one of the most memorable jewelry moments at the 2025Cannes Film Festival— if not of all time. On May 22, the Oscar winner, 79, attended theColors of Timepremiere wearing a jaw-droppingMargot McKinneynecklace called theMarina Collier. The centerpiece of the accessory is a string of gemstones that altogether weigh over 400 carats. In the middle lies a 241-carat cushion-cut green beryl followed by a more oval-shaped 109.48-carat one in addition to a 65.72 aquamarine stone. Vittorio Zunino Celotto/Getty Never miss a story — sign up forPEOPLE's free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories. Each one is surrounded by a stunning arrangements of green beryl, aquamarine, tourmaline, sapphire, diamond, paraibas and tsavorite (green garnet), on 18K gold. Also completing the necklace are 29 rare baroque pearls sourced over the years from the Australian South Sea. According to a press release, the Marina was inspired by the Great Barrier Reef and the Coral Sea. It originallydebuted at the 2025 TEFAF Maastrich fair, which showcases fine art, antiques, and design, in the Netherlands. Pricing is available upon request. Mirren, who is at Cannes as a L'Oréal Paris ambassador, piled on even more accessories with a statement-making headpiece topped with a floral appliqué. as well as large drop earrings adorned with pearls. Her ensemble also featured a black floor-length gown with exaggerated shoulders and a turquoise bow belt extending into a floor-grazing sash. MIGUEL MEDINA/AFP via Getty Cannes is often the place where attendees show up and show out in their best-dressed, but Mirren is one of those stars who takes her glam to the next level. Over the years, the1923star has not only experimented with her fashion but also with her beauty looks. The PEOPLE Appis now available in the Apple App Store! Download it now for the most binge-worthy celeb content, exclusive video clips, astrology updates and more! On a few occasions, Mirren has dyed her famous silver locks bold hues, including the time she went cotton candy pink for the 2019Best Years of a Lifepremiere with Andie MacDowell and when she switched up her look with cool monochromatic blue updo for2023's opening ceremony. She alsoembraced her grayson the red carpet in 2022 with a lengthy hairstyle courtesy of icy platinum blonde extensions blended into her silver strands. In 2024, Mirrenopened up to PEOPLE about embracing her individuality. In an interview, she proclaimed that she doesn't fall into the category of "beautiful people in the world." But, "We are all individuals and we all have our own individuality. And I think ultimately it's just embracing that and allowing yourself to be what you are," she said. Read the original article onPeople
