Amethyst stone. In alpaca silver. It are adjustable. The properties of Amethyst crystal are deeply connected to the third eye chakra, the center of spirituality and intuition, and the crown chakra, the chakra that governs our connection to the universe. The purple crystal meaning of Amethyst is associated with energy centers. This helps to explain why Amethyst crystal is such a powerful stone to balance, open, and activate the third eye and crown chakras.