Cherry Quartz 2" Skull

Cherry Quartz
A healer for emotional wounds
Can help release anger and tension
Great for concentration and taking exams
Instills courage and self reliance
Promotes vitality and heightened energy 
Associated with the Heart Chakra
 
Crystal Skulls
Help connect with spirit guides, ancestors, spiritual teachers and ascended masters
Can provide protection and healing when worked with
Can connect with ancient knowledge, as they are record keepers
Assist with channeling guidance
Can be held during meditation
You can also use them as part of a crystal grid
They each have their own personality and when asked, will give you their name
This is just a snippet of information.  There are many good books and articles to provide more information