I have lost several earrings. Some have been lost because they have been the kind thatyou hook on, and I have been out and about in the wind, just to find at the end of my outing that one solitary earring remains.
Others I have lost because they are clip ons and one has fallen without my noticing. Especially hurtful to me was losing one of the earrings I wore for my wedding.
Others I have lost to damage. they have come undone, kind of how people come undone, and then all you have left are the pieces.
Others have "disappeared", mysteriously, one day two, next day one. These are the ones that leave me perplexed.