Amethyst is an amazing crystal that not only features a gorgeous purple colour, but many amazing properties as well. Amethyst is known for the following:
 
Naturally powerful & protective
Eases Stress and physical/emotional/ psychological pain
Boosts hormone production and metabolism as well as cleanses immune system 
Emotionally grounding- alleviates anger, fear, anxiety and assists with grief 
Clears negative energy in an environment and cleanses the aura
Promotes higher state of consciousness
Enhances meditation and spiritual awareness
Strong healing and cleansing properties 
Assists with overcoming addictions and blockages 
Can promote calmness or be stimulating as needed 
Facilitates focus, decision making, memory and motivation
Opens intuition and enhances psychic gifts 
Assists with insomnia and nightmares
 
Size, shape, colour, textures etc may vary.