High-end watches are worse at telling the time than electronic watches, but they are visibly different and identifiable, so they can broadcast status. Diamonds

High-end watches are worse at telling the time than electronic watches, but they are visibly different and identifiable, so they can broadcast status. Diamonds made by man or nature are now indistinguishable, except to highly trained experts (and even then, not always), so it's unclear why anyone would prefer the expensive kind.