States in the U.S. which have significant mineral deposits often create a state mineral, rock, stone or gemstone to promote interest in their natural resources, history, tourism, etc. Not every state has an official state mineral, rock, stone and/or gemstone, however.
In the chart below, a year which is listed within parentheses represents the year during which that mineral, rock, stone or gemstone was officially adopted as a State symbol or emblem.
|State||Mineral||Rock or Stone||Gemstone|
|South Dakota||Rose Quartz quartz-southd||agate-southd
State Jewelry: Black Hills Gold
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