Amethyst is a form of Quartz. It is a powerful and protective stone with a high vibration. It helps to protect against psychic attacks and can enhance the memory as well as assist in deeper understanding when you meditate.
Amethyst is great stone for travellers as it brings protection on their journey and is related to the third eye which is where our intuition sits.
Amethyst can help with insomnia, anxiety and nightmares.