Nunderite

Nunderite
An excellent grounding & shielding stone
Effective if you have been under prolonged psychic attack
Cleanses the aura and charges it with light
Provides a calming effect during times of turmoil
Draws like minded people toward you
Facilitates multi dimensional psychic protection, creating an impenetrable interface around the aura
Imparts emotional strength and courage to move forward
Traditionally helpful for weather magic
Found in New South Wales, Australia
 
These are priced by weight and not necessarily by size.