Amethyst is a total powerhouse of a stone and is as beautiful as it is powerful.
It is a cleansing stone and can help absorb negative energy and acts as a barrier against lower energies and unhealthy environments. 
Amethyst is a great to use during meditation due to its calming nature and can heighten your intuition and psychic abilities.

Place amethyst throughout your home to keep energy clear and light, and on your bedside table at night to help cure insomnia.