Even if a monkey wears a golden ring, it is and remains an ugly thing.
More Dutch Proverbs:
Beauty is in the eye of the beholder.
Dutch
One quill is better in the hand than seven geese upon the strand.
Dutch
Let God's waters run over God's acres.
Dutch
Who has deceived thee so oft as thyself?
Dutch
He that will not be counselled cannot be helped.
Dutch