carved in stone

cast the first stone

To act self-righteously in accusing another person, believing oneself to be blameless.

get blood out of a stone

To do something difficult, frustrating, or pointless.

kill two birds with one stone

To solve two problems with one single action.

leave no stone unturned

To search or investigate thoroughly.

rolling stone

A person who moves around a lot and never settles down; a vagrant.

set in stone

Permanent; certain; firm.

stepping stone

Something used as a way to progress to something or somewhere else.

stone cold

Very cold (literally); lacking any semblance of warmth.