Amethyst is directly related to the mind and its health. It is thought to improve intelligence, cerebral thought as well as memory recall. It is a stone of peace and calming and can be used as a powerful meditation aid.
Agate is known to enhance mental function, improve concentration, perception and analytical abilities. It soothes and calms, healing inner anger or tension and creates a sense of security and safety.
Sardonyx is used as a stone of protection and strength. It promotes virtuous conduct and integrity. Sardonyx attracts friends and good fortune. It brings lasting happiness and stability to partnerships.
Lava is known for being a grounding stone, one that can balance the emotions and bring about calmness and strength. It’s considered to be a stone of rebirth and shedding unneeded layers of emotional attachment.