Diamonds Are a Man's Best Friend (Italian: Ray Master l'inafferrabile) is a 1966 Italian thriller-heist film written and directed by Vittorio Sala and starring Félix Marten, Liana Orfei and Gastone Moschin.

[1][2] An adventurer steals a valuable diamond known as "Mountain of Light" from the museum.

A band of gangsters gets on his trail to take his loot.

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