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.)

State	Mineral	Rock	Stone	Gemstone
Alabama	Hematite (1967)1	Marble (1969)2		Star Blue Quartz (1990)3
Alaska	Gold	Jade
Arizona	Fire Agate	Petrified wood		Turquoise
Arkansas	Quartz	Bauxite (1967)		Diamond
California	Gold	Serpentine (1965)	Jade	Benitoite (1985)
Colorado	Rhodochrosite (2002)	Yule marble (2004)		Aquamarine (1971)
Connecticut	Garnet
Delaware	Sillimanite
Florida			Agatized Coral (1979)	Moonstone (1970)
Georgia	Staurolite (1976)	Quartz (1976)		Amethyst (1976)
Hawaii				Black coral
Idaho				Star garnet
Illinois	Fluorite (1965)
Indiana			Limestone
Iowa		Geode (1967)
Kansas
Kentucky	Coal (1998)4	Kentucky Agate (2000)4		Freshwater pearl (1986)4
Louisiana	Agate	Petrified palmwood
Maine				Tourmaline
Maryland				Patuxent River Stone
Massachusetts	Babingtonite	Roxbury Puddingstone (1983)		Rhodonite
Michigan			Petoskey stone fossilized coral (1965)	Chlorastrolite (aka Isle Royale greenstone)
Minnesota	Iron			Lake Superior agate (1969)
Mississippi		Petrified Wood (1976)
Missouri	Galena (1967)	Mozarkite (1967)
Montana	Agate			Yogo Sapphire
Nebraska	Blue Agate	Prairie agate (1967)
Nevada	Silver	Sandstone (1987)		Precious: Virgin Valley black fire opal Semiprecious: Nevada turquoise
New Hampshire	Beryl (1985)	Granite (1985)		Smoky quartz (1985)
New Jersey
New Mexico		Turquoise
New York				Garnet (1967)
North Carolina			Granite (1979)	Emerald (1973)5
North Dakota	Teredo Wood
Ohio				Ohio Flint
Oklahoma		Rose Rock – Barite crystal
Oregon		Thunderegg (1965)		Oregon sunstone (1987)
Pennsylvania
Rhode Island	Bowenite (1966)	Cumberlandite (1966)
South Carolina	Amethyst		Blue granite (1969)	Amethyst (1969)
South Dakota	Rose quartz			Fairburn agate (1966)
Tennessee		Limestone (1979)	Agate	Tennessee Pearl (1979)
Texas			Oligocene petrified palmwood (1969)	Texas blue topaz (1969)
Utah	Copper (1994)6	Coal (1991)7		Topaz (1969)8
Vermont	Talc	Granite, marble and slate (1992)		Grossular garnet
Virginia
Washington				Petrified wood (1975)9
West Virginia				Silicified Mississippian fossil coral Lithostrotionella (1990)
Wisconsin	Galena (1971)	Red granite (1971)
Wyoming				Jade (Nephrite) (1967)

Trivia

Lists of miscellaneous information should be avoided. Please relocate any relevant information into appropriate sections or articles. (January 2008)

• 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)

See also

• Lists of U.S. state insignia
• List of U.S. state fossils

References