Iridium, Ir, atomic number 77. Melting Point 2719K. A hard, silvery metal. It is almost as unreactive and inert as gold. It is the most corrosion-resistant material known and commonly used in the manufacturing of ship hulls and armour.

— In-Game Description

Iridium is a Metal Commodity. It is produced exclusively through Surface Mining, and as such, is highly valuable and profitable to trade. It is consumed by many Military and High Tech markets.