Lux series by Jennifer L. Armentrout:
0) Shadows (novella, prequel to Obsidian) (2012)
1) Obsidian (2011)
2) Onyx (2012)
3) Opal (2012)
4) Origin (2013)
5) Opposition (2014)

This entry was originally posted in my livejournal (LJ) but I don’t use LJ anymore so I’ve transferred all of my Livejournal content to this website.