See Timothée Chalamet’s ‘Marty Supreme’ necklace for Knicks NBA Finals game

Timothée Chalamet is dreaming big for the Knicks.

The actor, 30, traveled to San Antonio’s Frost Bank Center to cheer on his beloved New York Knicks as they took on the Spurs in the NBA Finals 2026 — and he brought his good luck charm along with him.

The accessory in question: a custom diamond pavé “Marty Supreme” pendant by The Crown Collection, designed by Ryan Rehbock and commissioned through designer Doni Nahmias, who created the film’s much-hyped merch collection.

“I designed this pendant to immortalize a moment in time — the iconic image [of Marty] running through the streets of New York with his briefcase,” Rehbock told Page Six Style of the piece, which depicts Chalamet’s character sprinting through the city — a scene that also appears on the film’s poster.

The pendant is covered in more than 2,000 hand-set VVS diamonds with “meticulously bright cut lines to bring out all of the details,” Rehbock said.

Chalamet paired the pendant with a blue and orange Adidas soccer jersey and a Cartier tennis necklace set with pear-shaped diamonds — a custom piece worth six figures. His girlfriend, Kylie Jenner, 28, is also a devoted fan of pear-cut stones — she’s worn a pair of Lorraine Schwartz pear-shaped diamond studs (both in one ear) and two pear-cut pinkie rings from the jeweler to several earlier playoff Knicks games.

The connection between Rehbock and Chalamet began in Nahmias’ studio, where the Crown Collection jeweler was working when Nahmias asked him to craft a keychain for the actor — a pavé diamond ping-pong paddle and silver running man dangling from a carabiner.

Chalamet loved the keychain so much he clipped it to his jeans belt loop when he appeared on “The Tonight Show Starring Jimmy Fallon” in December.

As for the pendant itself, Rehbock had just 10 days to bring it from concept to completion. It was a birthday gift for the actor, who turned 30 on Dec. 27, right around the film’s Christmas Day premiere.

“This piece was made with an incredible amount of care and passion, and I’m so grateful Timothée connected with it so strongly,” Rehbock said. “Seeing the pendant become part of these memorable moments has made the project even more meaningful.”

Rehbock, who has also designed pieces for Post Malone and Billie Eilish, called the pendant a “good luck charm” in an Instagram post Wednesday.

The pendant is just the latest in a rotating lineup of statement necklaces Chalamet has brought courtside this postseason. Over the course of the Knicks’ playoff run, he’s worn two separate Cartier Panthère diamond pendants (worth about $14,000 and $30,000, respectively), a 47-carat Alex Moss St. Mark chain in white gold and a Prada diamond chain.

The bling appears to be working: the Knicks erased a 14-point deficit to beat the Spurs 105-95 and take a 1-0 series lead. Game 2 is Friday in San Antonio, and Chalamet will surely be sparkling on the sidelines.