Harmonia
Harmonia is known for a dangerous necklace she had on her wedding day. When Athena made Cadmus the king of Thebes, Zeus gave him Harmonia. All the gods attended the wedding. Cadmus gave the bride with a cloth and the necklace. The necklace was made by Hephaestus. This necklace is commonly known as the necklace of Harmonia. It brought misfortune to all who had it. Other stories said that Harmonia took this necklace (ὅρμος) from some of the gods. It might be either from Aphrodite or Athena.