Amethyst

Amethyst
A must have crystal 
Extremely powerful, high vibrational and protective 
Guards against psychic attack
Enhances spiritual awareness
Helps overcome addictions and blockages of all kinds
A natural stress reliever
Helps you feel less scattered and more focused 
Helpful with insomnia
Enhances memory and and increases motivation
Facilitates meditation
Can relieve headaches
Stimulates the crown chakra
Can fade in the sunlight
 
These are priced by weight and not necessarily by size.