― A methyst is the purple variety of quartz and is one of the most popular gemstones. They have been sought after by Royalty throughout the ages as symbols of wisdom, Strength and Confidence. In addition to Royalty, the amethyst's luminous quality, its spectacular play of light, and its role as a protective stone meant they were also worn by bishops.Amethysts form from quartz, and are mined from many locations around the world. One of the chief sources of supply for amethysts is Brazil. Some [...].