The Indigo Crystal is a block added by The Future Mod!. It generates underground in the Overworld from Y levels 12 to 59. Up to 5 Indigo Crystal veins generate in 1 chunk, and each Indigo Crystal vein consists of up to 6 Indigo Crystals, making Indigo Crystal about as rare as Redstone Ore.
Objects viewed through an Indigo Crystal will be tinted blue.
