Amethyst is a variety of quartz that is known for its beautiful violet or purple color. The color of amethyst is caused by trace amounts of iron and other impurities in the quartz crystal. When light hits the crystal, the
impurities absorb certain wavelengths of light, causing the amethyst to appear purple.
The intensity of the purple color in amethyst can vary widely, depending on the amount and type of impurities present in the crystal. Some amethyst stones may be a pale lilac color, while others may be a deep, rich purple. The color of amethyst can also be affected by the way it is cut and polished, as well as by the lighting conditions under which it is viewed.
