Trivia

---

California was the first state to designate an official State Rock.
Vermont has three official State Rocks.
Colorado is the only state whose geological symbols are always red (rhodochrosite), white (yule marble), and blue (aquamarine).

State Geological Symbols

---

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	Marble (1969)		Star Blue Quartz
Alaska	Gold	Jade
Arizona	Fire Agate	Petrified wood		Turquoise
Arkansas	Quartz Crystal	Bauxite (1967)		Diamond
California	Gold	Serpentine (1965)		Benitoite (1985)
Colorado	Rhodochrosite (2002)	Yule marble (2004)		Aquamarine (1971)
Connecticut	Garnet
Delaware	Sillimanite
Florida			Agatized coral (1979)	Moonstone
Georgia	Staurolite	Quartz	Amethyst
Hawaii				Black coral
Idaho				Star Garnet
Illinois	Fluorite
Indiana			Limestone
Iowa		Geode (1967)
Kansas
Kentucky	Coal	Kentucky Agate (2000)	Freshwater pearl
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				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)
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			Blue granite (1969)	Amethyst (1969)
South Dakota	Rose quartz			Fairburn agate (1966)
Tennessee		Limestone (1979)	Agate	Tennessee Pearl (1979)
Texas			Oligocene petrified palm wood (1969)	Texas blue topaz (1969)
Utah	Copper (1994)	Coal (1991)		Topaz (1969)
Vermont	Talc	Granite, marble and slate (1992)		Grossular garnet
Virginia
Washington				Petrified wood (1975)
West Virginia				Silicified Mississippian fossil coral Lithostrotionella (1990)
Wisconsin	Galena (1971)	Red granite (1971)
Wyoming				Jade (Nephrite) (1967)

See also

---

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

United States state insignia | אבני מדינות ארצות הברית

Reference PAge http://www.jewelrymall.com/stategems.html