Iridescent Brick

The Iridescent Brick is made from ash found in The Underworld. It is not a strong brick, and it can be mined with any pickaxe.

As of version 1.2, the small shrines in the Underground Jungle can be made of Iridescent Bricks and Iridescent Brick Walls, replacing the precious metal bricks they used to be made of.

Trivia

 * "Iridescence" is the property of appearing different colors depending on the viewing angle.
 * In real-life, iridescent tiles are glass ceramics with a rainbow sheen that changes color when looked upon, (similar to an oil slick,) purchased for decorative purposes.