Black Sand

Black sand is a strange substance that Raboniel gives Navani. The sand slowly turns white when exposed to Stormlight or Voidlight. If a fabrial uses the Light, the sand changes faster. One can wet the sand to reset it to black, though it has to be dry again before it can turn white. It is useful to measure how much Light a fabrial is using. It also changes colors in the presence of spren.
Raboniel says this sand comes from another world.
==References==
Category:Materials