Pyrite, also known as fools gold, is an iron sulfide mineral with the chemical formula FeS2. It is the most abundant sulfide mineral and is found in igneous, metamorphic, and sedimentary rocks. Pyrite has a metallic luster and a pale brass-yellow hue, which gives it a superficial resemblance to gold, hence the nickname fools gold. The name pyrite comes from the Greek word "Pyr," meaning fire, and it can emit sparks when struck. Pyrite is a popular crystal for many reasons. It is a powerful protective stone that creates a shield against negative energy and environmental pollutants. It is also a wonderful abundance stone, encouraging wealth, prosperity, and success. Pyrite has a connection to the solar plexus chakra and is used to increase strength, energy, willpower, and confidence. It is used in feng shui to attract abundance and good fortune. Pyrite is also used by the Kaurna people of South Australia as a traditional method of starting fires.