New Delhi, Nov. 14 -- A $300,000 diamond attached to a Formula 1 car disappeared following a crash at the 2004 Monaco Grand Prix. More than 22 years later, the mystery surrounding the precious stone remains unsolved, with former Jaguar Racing officials offering fresh insights into what might have happened to It.

According to BBC Sport, the 1.4-carat diamond was mounted on the nose of Austrian driver Christian Klien's Jaguar during the Monaco Grand Prix on 23 May, 2004. It disappeared after the rookie crashed on the opening lap and has never been recovered.

The diamond was part of a promotional partnership between Jaguar Racing and the Hollywood film Ocean's Twelve, starring George Clooney, Brad Pitt and Matt Damon.

Jaguar was looking t...