The couple celebrated their 'diamond (wedding) anniversary' a few months ago. = ('Brit') They celebrated their 'diamond wedding'.
The house is a 'diamond in the rough', and with some hard work it will be really beautiful.
Her husband gave her a 'diamond' [=a diamond ring] for her birthday.
(..) impenetrable than any army. Observe. Deactivate. Failing the radar shield, the slightest release of pressure in the weight of the diamond... and the would-be thief is a prisoner. A prisoner of the Pink Panther. Why is it called (..)1975 The Return of the Pink Panther
(..) From the dynasty of Akbar the Magnificent, and for over a thousand years our nation's religious symbol, the Pink Panther. Largest and most famous diamond in the world. Irreplaceable. Its value cannot be estimated in terms of money. Isn't the museum worried that someone might steal it? (..)1975 The Return of the Pink Panther