The most direct proverb, in the sense of “similitude,” which we have encountered so far.

Jewel of gold - Better, a ring; that is, the…

As a jewel of gold in a swine’s snout.— More accurately, a nose-ring inserted through the right nostril and hanging down over the…

[As] a jewel of gold in a swine's snout
The allusion seems to be to the ringing of swine, to prevent their rooting u…

Beauty is abused by those who do not have discretion or modesty with it. This is true of all bodily endowments.