Bicolor, violet-yellow variety of quartz. The stone is both Amethyst and Citrine. The colors of the stone transition gradually. Usually cut into a rectangular shape, in such a way that it contains equal parts of both stones, and thus – two colors. Ametryn should be charged with solar energy every few weeks and cleaned under running water. This gemstone belongs to the group of very hard stones, making it excellent for jewelry. It is also very popular among artists and sculptors. Ametryn has a cleansing power – it cleanses the aura, thoughts, and body. It regenerates the body and strengthens the immune system, as well as treats chronic fatigue syndrome.