Especially when the are in the form of jewelry. Perhaps with gold or diamonds........ Queen Victoria wore a serpent engagement ring which symbolized eternity and was to bring good luck.
Dita Von Teese showing off her diamond wrist friend at a C Magazine event
late Georgian or Victorian snake pin with lovers eye
Boucherons gold, turquoise, diamond, sapphire stunner with emerald eyes
slightly comic/goofy enameled antique ring