Fool's gold is a common nickname for the mineral pyrite, which has a shiny, metallic luster and a pale yellow color that can resemble real gold. It is often found in sedimentary rocks and can be mistaken for gold by inexperienced prospectors. However, unlike gold, pyrite is brittle and can break easily. Despite its misleading appearance, fool's gold has some practical uses. It is sometimes used in the production of sulfuric acid and can be found in some types of jewelry. While it may not hold the same value as gold, it remains an interesting mineral for collectors and geologists alike.