Rough diamonds may sometimes be mistaken for worthless pebbles.

Rough diamonds may sometimes be mistaken for worthless pebbles.

A place where pebbles are polished and diamonds are dimmed.

Colleges are places where pebbles are polished and diamonds are dimmed.

Diamonds are intrinsically worthless, except for the deep psychological need they fill.

Everyone has heard of a diamond in the rough. It's rare to encounter those diamonds and know you are in the presence of goodness. He's a quiet individual ... but when things were hard and hectic and we had hurricane overload, he did his best to assist us.