a pearl
Examples
It is better wither to be silent, or to say things of more value than silence. Sooner throw a pearl at hazard than an idle or useless word; and do not say a little in many words, but a great deal in a few.
Black is a pearl in a woman's eye.
For memory, we use our imagination. We take a few strands of real time and carry them with us, then like an oyster we create a pearl around them.
To a dog a bone has more value than a pearl.
A pearl is worthless as long as it is still in its shell.
A pearl is worthless as long as it is in its shell.