Rainbowite is currently the most valuable ore in the game, followed by Illuminite and Orcalium. It is found from Layer 9 onwards in the Home World. It has a very unique design, with a thermal-radiation style rainbow effect and a black background to accompany it.
- This is the first ore to have a texture on the ore blocks. The texture used is from the Pixelated Rainbow skin.
- This is a retexture of Diamond ore.
- Mining 5 Rainbowite was required to get the Like a Sir hat from the Sir Minesalot Challenge quests.
- This ore's rarity has decreased in an unknown update, making it easier to find, while other ores' rarity has been increased.