Associated with the Third Eye and Crown chakras
Discovered in Peru less than 40 years ago and also know as Blue Anhydrite.  As it's name implies it's used for connecting to the angelic and spirtual realms as well as with spirit guides.  Great for mediumship and channelling, this is a higher vibrational stone.  Because of it's calm and soothing energy this would also be a greaet stone for the bedroom and sleeping/dreamwork.
 
This listing is for 1 tumbled stone intuitively chosen by me.