Amethyst: A "stone of change, protection & enlightenment". Enhances spiritual awareness, meditation, visualization, serenity & composure. Attracts good luck & love, calms & transforms. Shifts energies to the higher frequencies of both the spiritual & ethereal levels.
5 Ways To Use Crystals for Good Feng Shui in Your Home
Amethyst ~ Spirituality, #3, encourages sobriety, Repels more than it attracts=protection , calming mental effects, enhanced when placed with rose quartz, good for insomnia and enhancing dreams (I have done this).