10. Bella Hadid’s Bulgari Serpenti
Estimated Value: ~$1-2 Million
Bulgari’s Serpenti collection is a red carpet cheat code for instant glamour, and no one has wielded its power more effectively than Bella Hadid. At the 2019 premiere of 'Pain and Glory,' she wore a ruby-and-diamond version of the iconic snake coiling around her neck. While its exact valuation is private, similar high-jewelry Serpenti pieces easily cross the seven-figure threshold. It was a perfect pairing: a sinuous, legendary design on one of the world's most-watched models.
9. Jessica Chastain’s Piaget Sunlight Journey
Estimated Value: ~$3 Million When you’re a jury member at Cannes, you have to bring your A-game for two straight weeks. Jessica Chastain understood the assignment in 2017, especially at the amfAR Gala. She wore Piaget’s 'Sunlight Journey'
necklace, a breathtaking creation featuring a 20.2-carat yellow diamond, surrounded by pink spinels and white diamonds. It wasn’t just a piece of jewelry; it was a wearable sunset, reportedly assembled from a collection valued in the millions.
8. Priyanka Chopra Jonas’s Chopard Masterpiece
Estimated Value: ~$3.5 Million
For her Cannes debut as a married woman in 2019, Priyanka Chopra Jonas didn’t just dip her toe in the water—she cannonballed. She arrived in a Chopard necklace from their Haute Joaillerie Collection featuring a stunning pear-shaped diamond weighing over 50 carats, alongside another 34 carats of assorted diamonds. The piece was a statement of arrival, cementing her status as a global star with the jewelry game to match.
7. Carla Bruni’s Bulgari Bib
Estimated Value: ~$5 Million+
As a former first lady of France and a supermodel, Carla Bruni knows a thing or two about making an entrance. For the 2021 festival, she wore a show-stopping Bulgari bib necklace that draped across her collarbones like a couture fishing net woven from diamonds and aquamarines. The unique design and sheer volume of gemstones put its estimated value well into the millions, proving that true icons only get better with time.
6. Julia Roberts’ Chopard Emerald
Estimated Value: ~$15-20 Million (for the emerald alone)
In 2016, Julia Roberts created one of the most memorable moments in Cannes history. Not just because she walked the red carpet barefoot, but because she did it while wearing a Chopard necklace centered on a jaw-dropping 52.76-carat pear-shaped emerald. Sourced from the legendary Muzo mine in Colombia, the emerald was flanked by another 43.41 carats of diamonds. The value is staggering, but the moment was priceless—a perfect blend of Hollywood royalty and rebel spirit.
5. Charlize Theron’s Garden of Kalahari
Estimated Value: ~$25 Million
Chopard is the official partner of Cannes, and in 2017 they unveiled the 'Garden of Kalahari,' a collection derived from a single, flawless 342-carat rough diamond. Charlize Theron had the honor of wearing the centerpiece necklace, featuring the three largest diamonds cut from the original stone—a 50-carat round brilliant, a 26-carat heart shape, and a 25-carat pear shape. It was less a necklace and more a piece of geological history.
4. Anne Hathaway’s Bulgari Sapphire
Estimated Value: ~$25 Million+
Anne Hathaway’s 2022 Cannes appearance was a masterclass in elegance. The crown jewel of her look was Bulgari’s 'Mediterranean Reverie' necklace, a magnificent piece showcasing a 107.15-carat cushion-cut Sri Lankan sapphire. The impossibly deep blue stone, one of the largest ever to appear at the festival, was set in a diamond-and-sapphire lattice. Its value is speculative, but experts place it comfortably in the tens of millions, making it one of the most significant gems of the modern era.
3. The Incomparable Diamond Necklace
Estimated Value: $55 Million
While this one is more of a legend than a red carpet staple, it deserves its place. Once owned by Lebanese jeweler Mouawad, 'L'Incomparable' features the world's largest internally flawless yellow diamond, weighing 407.48 carats, suspended from a vine of 91 white diamonds totaling over 200 carats. Though it hasn't been worn at Cannes, its spirit looms large over any discussion of 'important' necklaces, setting a bar for sheer carat-weight audacity.
2. Bella Hadid’s Schiaparelli “Lungs”
Value: Priceless (Artistically)
Some necklaces are important for their carats; others, for their courage. At the 2021 festival, Bella Hadid wore a Schiaparelli Haute Couture dress with a neckline cut so low it was essentially an open canvas. On it, she wore a gilded brass necklace shaped like a pair of human lungs, its bronchioles and alveoli intricately detailed with rhinestones. Designed by Daniel Roseberry, the piece wasn’t about monetary value but about pure, breathtaking artistry. It was the most talked-about accessory of the year and an instant classic of fashion as performance art.
1. The Palme d’Or
Value: Symbolically Priceless / Materially ~$22,000
The most important necklace at Cannes isn't worn on the red carpet—it's awarded on stage. Since 1998, the Palme d'Or trophy has been handcrafted by Chopard from 118 grams of 18-karat Fairmined certified ethical gold, with a value of around $22,000. But its true valuation is incalculable. It represents the pinnacle of cinematic achievement, a prize that can launch careers and cement legacies. In a sea of borrowed diamonds, this is the one piece of gold everyone truly wants to take home.
