Nothing is ever too glamorous when it comes to the Cannes red carpet. While we tend to think foremost of the grand fashion—the couture and the customs—that grace the Croisette, jewelry is just as crucial in bringing a look to life, that extra sparkle taking it from lovely to extraordinary.

The 2025 Cannes Film Festival has produced no shortage of jaw-dropping jewelry. Kicking off strong, Bella Hadid attended the festival’s opening ceremony in a slinky Saint Laurent dress, which she accessorized with nearly 100 carats of Chopard emeralds dangling from her earlobes. She isn’t the only one who ditched diamonds for colorful stones: Isabelle Huppert hit the Croisette with an oversized emerald brooch affixed to her denim Balenciaga jumpsuit, and Salma Hayek wore a massive tourmaline pendant from Boucheron. A$AP Rocky, meanwhile, paired a ruby brooch with his custom diamond-encrusted gold grills.

There were, of course, classic Old Hollywood-style jewels. Rosie Huntington-Whiteley attended the New Wave premiere in a diamond Tiffany & Co. necklace, and Renate Reinsve accessorized her pink peplum dress with a Louis Vuitton high jewelry collar.

Below, see the most staggering, jaw-dropping, eye-bulging jewelry moments from the 2025 Cannes Film Festival, from the collars that envelope wearers’ necks to the earrings that steal the show.