Gold, silver and lead.
Which of the three is best?*
Gold showers the beauty
but it is a true pest.

Silver gives off shine
but shall dull in time.
lead has no value
Yet it's greater than a dime.

To answer thy question:
*Lead is best of the three.
To eye's it's nothing
but shall set hearts free.

Lead is the tool
to unlock a soul
though what's written
maybe blacker than coal.