Rainbow Brick

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Rainbow Brick
  • Rainbow Brick item sprite
  • Rainbow Brick placed
Stack digit 9.pngStack digit 9.pngStack digit 9.pngStack digit 9.png
Placeable✔️ (1 wide × 1 high)
Use time15 (Very fast)
RarityRarity level: 1
Rarity level: 0
Research100 required
Waterfalls changing color by using Gemspark Blocks and Rainbow Brick. Gemspark Blocks' effects are disabled when they are offline.
Obtained from Obtained from
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
Rainbow SlimeRainbow Slime.gifRainbow Slime30–60100%

Rainbow Brick is a Hardmode brick that can be obtained as a drop from the Rainbow Slime. It glows in the dark and cycles through the colors of the rainbow. The cycling colors of Rainbow Bricks, Rainbow Brick Walls, Helium Moss, Helium Moss Brick, Helium Moss Brick Walls, Rainbow Torches, the Disco Ball, and Rainbow Hair Dye are synchronized with each other.

If a waterfall passes through a Rainbow Brick, it will also cycle through the colors. Rainbow Bricks will not change the color of lavafalls, honeyfalls, or shimmerfalls.



ResultIngredientsCrafting station
Rainbow BrickRainbow BrickWork BenchWork Bench

Used in

ResultIngredientsCrafting station
Rainbow FlareRainbow Flare10By Hand
Rainbow TorchRainbow Torch10
Rainbow Brick WallRainbow Brick Wall4Work BenchWork Bench


  • In Celebrationmk10 worlds, Underground Cabins are occasionally made of Rainbow Bricks.
  • Next to Lihzahrd Bricks, Rainbow Bricks are one of the hardest types of blocks to obtain, being that they generally never occur in the environment, cannot be crafted, and only drop from Rainbow Slimes. Despite this, Rainbow Bricks still only have a rarity of Rarity level: 1 / Rarity level: 0.
  • The aesthetic of the brick, when placed, will either have the rectangular appearance of a standard brick, such as a Gray Brick, or a uniform blank appearance, such as that of a Smooth Marble Block. It may also change between one and the other when hammered. This can make it a rather tedious building material to use.
  • Rainbow Bricks will still maintain their rainbow-glowing effect even when painted.