Amazonium

History
Discovered by the Chief Blacksmith Io shortly after the Amazons were gifted Themyscira by the gods. It is one of the strongest and most rare metals on Earth as it only exist on the island of Themyscira. Io is solely in charge of the metal and it's usage and distribution.

After Hercules and the Argonauts took control of Themyscira he made Io create the Bracelets of Submission for every Amazon on the island as a reminder of their enslavement to Hercules.