More light on bright/murky crystals, pls?

i found only one topic about it
http://forums.elderscrollsonline.com/discussion/126890/murky-crystal#latest
There are two results from completing the circuit I have found. One result is the spawning of the Duneracer world boss where the beams path ends. The other result is a treasure chest in the same location. It contains a bag of Unknown Craglorn Armor/ Weapon.
and still investigation not complete
which combinations works for you, guys?
Edited by QuadroTony on January 2, 2015 9:54AM