Fluorite is a mineral with a veritable bouquet of brilliant colors. Fluorite is well known and prized for its glassy luster and rich variety of colors. The range of common colors for fluorite starting from the hallmark color purple, then blue, green, yellow, colorless, brown, pink, black and reddish orange is amazing and is only rivaled in color range by quartz. The many colors of fluorite are truly wonderful. If we take fluorite into a dark room we are unable to see it. However, if we have an ultraviolet light (which produces light that is invisible to humans) and shine it on the fluorite, the fluorite will probably glow a beautiful blue-purple in the dark as long as the ultraviolet light is shining on it.