In the same way, when my daughter invited someone home for dinner, she came wearing a brooch in the shape and form of a lizard. To us, this is a sometimes-tolerated (it eats cockroaches) and sometimes-hated, but very common, domestic creature...we would not dream of wearing jewellery in its shape. Though one of the most popular of the very beautiful mud-sculptures in West Bengal when I grew up was an intensely realistic one of a lizard eating up a cockroach, I would never have actually bought one of those, either!
Makes me think, though...why would the shape of a cobra be so commonly used in jewellery when that, too, was quite common some decades ago? The ways of human beings are unendingly interesting!