Final answer:
The movie is 'The Pink Panther,' a 1963 comedy marking the debut of Inspector Jacques Clouseau.
Step-by-step explanation:
The 1963 movie in question, named after the world's largest diamond given to Princess Dala, is "The Pink Panther." The film is a classic comedy and marks the debut of the bumbling French detective, Inspector Jacques Clouseau, played by Peter Sellers.
The movie revolves around the theft of the priceless gem, the 'Pink Panther' diamond, and the comedic mishaps that ensue as characters attempt to steal or recover it.