speech is silver, silence is golden

blue wall of silence

Strict secretiveness maintained by the members of a police force with respect to information which might be contrary to their interests, especially information concerning questionable police actions.

born with a silver spoon in one's mouth

Born rich, or into a wealthy family.

dead silence

A particularly notable/awkward silence or absence of response.

deafening silence

A noteworthy silence, or absence of response, especially one signifying disapproval or lack of enthusiasm.

golden age

A period of happiness, peace, prosperity, and great progress.

golden goose

Something that generates much profit or gives great advantages.

golden handcuffs

Any arrangement or agreement designed to provide extremely favorable benefits or pay, so as to discourage a participant from choosing to leave it, especially to retain a choice employee in a role that is unpleasant to them.

golden handshake

A generous severance payment, especially as an inducement to leave employment.