Proverbs 20:15 in the King James Version
There is gold, and a multitude of rubies: but the lips of knowledge are a precious jewel.
Context
14 “It’s no good, it’s no good,” says the buyer; but when he is gone his way, then he boasts.
15 There is gold and abundance of rubies, but the lips of knowledge are a rare jewel.
16 Take the garment of one who puts up collateral for a stranger; and hold him in pledge for a wayward woman.