Official State Stone of Indiana
Indiana designated limestone as the official state stone in 1971 (quarried in south and central Indiana from the geologic formation named the Salem Limestone). Limestone is also the state rock of Tennessee. All State Rocks & Minerals
Bedford, Indiana is known as the “Limestone Capital of the World.” Limestone quarried and carved in Bedford is featured on famous buildings across America, including the Pentagon and the Empire State Building. Indiana's State House in Indianapolis is also built with southern Indiana limestone.
According to the Minerals Education Coalition; "Limestone is a sedimentary rock composed mostly of the mineral calcite and comprising about 15% of the Earth’s sedimentary crust. It is a basic building block of the construction industry and a chief material from which aggregate, cement, lime and building stone are made."