Lucilliant is one of the 5 unmapped stars.
Its light is described as being "filled with tiny flecks of darkness and shimmer, all of which swirled like glitter in a snowglobe". The quintessence from Lucilliant is the coldest and the darkest, but also the most balanced, which makes it particularly valuable when something needs to be preserved.
The Black Swan used the light of Lucilliant as a way of leaping Sophie and Keefe underground to a cave, where they found the light of Candesia. According to Sophie, leaping using its light felt icy cold and shredded at every fiber of her being, and Keefe described it as being stomped on by an ogre.
- Page 409, Everblaze
2. Page 342, Legacy