- List of U.S. state minerals, rocks, stones and gemstones
Not every state has an official state mineral, rock, stone or gemstone. (Years, if listed in parentheses, are the years of the state's adoption.)
*California was the first state to designate an official State Rock.
*Colorado is the only state whose geological symbols are red (rhodochrosite), white (yule marble), and blue (aquamarine).
*Massachusetts also has a state historical rock (
Plymouth Rock), explorer rock ( Dighton Rock), and building and monument stone ( Granite)
Lists of U.S. state insignia
List of U.S. state fossils
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