Black Crystal

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

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

Black Crystal can also be crafted using the following recipe:

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

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