I call this my "Guardian Angel" Quartz.  It is from a small mined-out pocket in the Diamantina Region of Minas Gerais, Brazil. 
 
Each crystal creates a private room for you to access information from the higher realms.  Silver Quartz also raises your vibration, helps you assimilate the higher energies on our planet to stay in alignment, repairs tears and holes in your aura, and balances all chakras.  WOW!
 
Size:  2.5" x 1" x .75".  1 available.