Used in spell research for at least the following level 69 spells:
spell: aura of devotion - Class: CLR
spell: bulwark of calliav - Class: NEC, MAG
spell: color snap - Class: ENC
spell: curse of sisslak - Class: SHM
spell: desolate deeds - Class: ENC
spell: feral guard - Class: BST
spell: mark of the blameless - Class: CLR
spell: renewal of jerikor - Class: MAG
spell: solstice strike - Class: DRU
spell: spark of ice - Class: WIZ
spell: talisman of perseverance - Class: SHM
spell: wake of felicity - Class: ENC
spell: yaulp vii - Class: CLR