The Necklace
Harmonia and Cadmus were both later transformed into serpents (dragons in some versions of the myth). The extent of their suffering as a result of Harmonia wearing the Necklace is debatable because Cadmus and Harmonia are said to have ascended to the paradise of the Elysian Fields after their transformation. The Necklace then went to Harmonia's daughter Semele. She wore it the very day that Hera visited her and insinuated that her husband was not really Zeus. This led to Semele's destruction when she foolishly demanded that Zeus prove his identity by displaying himself in all his glory as the lord of heaven.