Vintage Amethyst & Diamond Halo RingWhat a precious cutie is this Vintage Amethyst & Diamond Halo Ring! Not only does she look wonderful, it is said that amethyst helps to develop your intuition. The origin of the Halo ring goes back to the early Georgian era (1714 1837) with mostly round designs. Later on in the Victorian era, oval shapes became popular and were often made with a different stone in the middle to imitate a flower.