Prehnite is a pale green mineral that occurs in crystalline aggregates
Prehnite is a useful stone for grids as it calms the environment and brings peace and protection. It is an excellent stone to place in the garden and it makes your home into a healing sanctuary for yourself. Prehnite teaches you how to be in harmony with nature and the elements, revitalizing and renewing the surroundings. [Source]
These stones contain black striations that give off a lovely lemon grass appearance.