Indigo Crystal

Indigo Crystal is a block added by The Future Mod!.

Obtaining
Indigo Crystal is generated underground in the Overworld at Y levels 12 to 59 (inclusive). Up to 5 Indigo Crystal veins generates in 1 chunk, and each Indigo Crystal vein consists of up to 6 Indigo Crystals, making Indigo Crystal about as rare as Redstone Ore.

Indigo Crystal can also be crafted using the following recipe:

Usage
Indigo Crystal emits a light level of 15, making it a strong light source.

When a player looks through Indigo Crystal, the part of the screen that's covered by Indigo Crystal will be shaded blue.