From Arkansas
 
Clear Quartz is the most versatile healing stone among all crystals.  Quartz is the most powerful healing stone of the mineral kingdom, able to work on any condition.  Clear Quartz is known as the stone of power and amplifies any energy or intention.  Clear Quartz protects against negativity, attunes to your higher self, and relieves pain. Clear Quartz has been shown to enhance and strengthen the aura.