1 Peter 3:3-4

let their ornament consist, not in what is external, in curling the hair, in appendages of gold, or finery of dress;

2 Peter 2:22

but the proverb is exactly verified in them, "the dog is return'd to his own vomit: the sow that was wash'd, is wallowing in the mire."

Treasury of Scripture Knowledge

Summary

As a jewel of gold in a swine's snout, so is a fair woman which is without discretion.

Bible References

A jewel

1 Peter 3:3
let their ornament consist, not in what is external, in curling the hair, in appendages of gold, or finery of dress;
2 Peter 2:22
but the proverb is exactly verified in them, "the dog is return'd to his own vomit: the sow that was wash'd, is wallowing in the mire."