Science Fair Project Encyclopedia
List of U.S. state minerals, rocks, stones and gemstones
List of U.S. state minerals, rocks, stones, and gemstones. Not every state has an official state mineral, rock, stone or gemstone.
California was the first state to designate an official State Rock. Vermont has three official State Rocks.
State minerals, rocks, stones, gemstones
(Years, if listed in parentheses, are the years of the state's adoption.)
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