What was the significance of the nuns brooch in Canterbury Tales?

The brooch says Love Conquers All. In Chaucer's depiction of the nun he strives for the reader to recognize the irony of the character. For instance, he mocks her singing by noting it is threw the nose. He also suggests that her French is a bane attempt at impressing others because it was learned in London. Furthermore, the nun's feeding of the dogs is shameful because at the time being there was a multitude of starving children. Hence, the simple fact that the nun owns a gold brooch is eye-raising. The nun's were meant to not live lavish lives. Furthermore, what interest should a nun have in love. Her duty is to god.