We have begun migration of most wikis to our new host, Amazon Web Services. All but the top 100 wikis are in read-only mode until the migration is complete. Estimated completion: TBD -- Update: Fri 10/20 11pm UTC - We have encountered some unexpected issues. Our staff is working around the clock to complete this process as quickly as possible. Thank you for your patience.
From Terraria Wiki
| Mobile-Only Content: This information applies only to the mobile version of Terraria.
The Rainbow Piece is a crafting material used solely to craft the Pot o' Gold, a pet-summoning item. Rainbow Pieces fall from the sky, much like Fallen Stars, except that they fall during the day, disappear at night, and only fall around the St. Patrick's Day season. They are slightly transparent.
- The Guide references that the rainbow pieces are parts of a greater object, the Prism Danann. However, there is no such item in the game.
- This may be a reference to the Tuatha Dé Danann, a supernatural race in Gaelic mythology.