Break open Omni Geodes
Break open Mystic Stones
Mine Iridium Nodes in the Skull Cavern
Mine Iridium Nodes in the Quarry Mine
Kill Monsters in Skull Cavern
Kill Monsters in the Volcano Dungeon
Fish Treasure Chests
Open Artifact Troves
Open Golden Coconuts
Find it in the Statue of True Perfection reward
Get it from the Statue of Endless Fortune on your birthday
Receive it from the Traveling Cart
Get it from a Rainbow Trout fish pond quest
Get it from the Desert Trader for 5 Iridium Bars
Get it from the Forge in the Volcano Dungeon using a Galaxy Soul
Get it from the Statue of Perfection
Get it as a rare drop from the Serpent
Get it as a rare drop from the Mummy
Get it as a rare drop from the Shadow Brute
Get it as a rare drop from the Shadow Shaman