Greek Natural Amethyst Silver Bangle Bracelet. Evoke the goddesses of ancient Greece while wearing this exquisitely detailed bangle. Length: 7.00 inches. Fashioned from oxidized sterling silver. Ancient Egyptians used the amethyst guard against guilty and fearful feelings. It has been worn as protection from self-deception, as well as a protection against witchcraft. The amethyst has long been used to open the spiritual and psychic centers, making it one of the power stones.