Indiana State Stone: Salem limestone

Indiana's state stone is Salem limestone, adopted in 1971.

Symbol names and dates are taken from primary state sources linked below. Informal or proposed symbols are not listed unless adopted.

Limestone specimen — Limestone (not necessarily from Indiana). Photo: Mike Davis, CC0, via Wikimedia Commons

State stone: Salem limestone

Adopted:: 1971
Law:: IC 1-2-9-1; Acts 1971, P.L.3
Variety:: Salem limestone

It is a variety of limestone. Limestone is a sedimentary rock with a Mohs hardness of about 3–4 and a dull luster, usually white, gray or brown.

The law describes limestone quarried in south and central Indiana from the Salem Limestone formation.

How to identify limestone →

Often confused with: Carbonatite, Chalk, Coquina

Also an official symbol of: Kansas, Tennessee

Indiana state symbols FAQ

What is the state stone of Indiana?

Indiana's state stone is Salem limestone, adopted in 1971 (IC 1-2-9-1; Acts 1971, P.L.3).

Sources

We cite primary sources (statutes, state government pages, federal regulations, and land-manager sites). Third-party listicles are not used as citations.

Indiana State River and Stone — Indiana Historical Bureau (accessed 2026-10-24).

Last verified 2026-10-24. Corrections welcome: if a statute has changed, tell us and we'll re-verify.

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