Glowing Soul Gem

Source
This item drops from:
 * Dark Strand Cultist in Ashenvale
 * Dark Strand Enforcer in Ashenvale
 * Dark Strand Adept in Ashenvale
 * Dark Strand Assassin in Ashenvale
 * Dark Strand Excavator in Ashenvale

Glowing Soul Gem as a quest objective
This item is an objective of.