Pyrite is one of the few shiny, metallic gemstones available today. It is often referred to as Fool's Gold in the trade. A rare variety of pyrite found only in Russia is Rainbow Pyrite, which is a fairly recent find that is traded in drusy form. Pyrite is named for the Greek word for fire, since it's known to produce sparks when struck with steel. Pyrite is an opaque gemstone that is cut en cabochon and exhibits an attractive metallic luster. Pyrite deposits can be found in Peru, Bolivia, Romania, Sweden, Mexico, and the United States.