One of the many attractions of buying and wearing antique and vintage jewellery is the scarcity value of some of the items.  Having something that few other people have  appeals to our sense of individuality and that can be expressed in what we wear.  Sometimes it's the craftsmanship that we see in antique jewellery that adds to its charm.  Othertimes, it's the design of something that fascintates us and that leads us to that "must have" emotion.