List of U.S. state minerals, rocks, stones and gemstones

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 by state listing

State	Mineral	Rock or Stone	Gemstone
Alabama	hematite-alab File:HematiteUSGOV.jpg Hematite (1967)	marble-alab File:MarbleUSGOV.jpg Marble (1969)	quartz-alab File:Statestarquartz.jpg Star Blue Quartz (1990)
Alaska	gold-alas File:GoldNuggetUSGOV.jpg Gold		neprhite-alas File:Jadestein.jpg Nephrite Jade
Arizona	copper-ariz File:USDA Mineral Copper 93v3957.jpg Copper (Arizona's nickname is "the Copper State")		turquoise-ariz File:Turquoise with quartz.jpg Turquoise
Arkansas	quartz-ark File:USDA Mineral Quartz Crystal 93c3951.jpg Quartz	bauxite-ark File:BauxiteUSGOV.jpg Bauxite (1967)	diamond-ark File:Brillanten.jpg Diamond
California	gold-cali File:GoldNuggetUSGOV.jpg Gold California's nickname is the Golden State	serpentine-cali File:SerpentineUSGOV.jpg Serpentine (1965)	benitoite File:Benitoite new.jpg Benitoite (1985)
Colorado	rhodochrosite-colo File:The Searchlight Rhodochrosite Crystal.jpg Rhodochrosite (2002)	marble-colo File:DSCN2642 marbleblocksinmarble 600.jpg Yule marble (2004)	aquamarine-colo File:AguamarinhaEZ.jpg Aquamarine (1971)
Connecticut	garnet-conn File:GarnetCrystalUSGOV.jpg Almandine Garnet (1977)	brownstone File:PostcardPortlandCTBrownstoneQuarry1911.jpg Connecticut's nickname is the Brownstone State
Delaware	sillimanite File:Sillimanite.jpg Sillimanite
Florida		coral-agatized-flor File:Agatized Coral.jpg Agatized Coral (1979)	moonstone File:MoonstoneGem.jpg Moonstone (1970)
Georgia	staurolite File:Staurolit, Madagaskar.jpg Staurolite (1976)		quartz-rose-geor File:Quartz rose GeorgiaHoggMine13.jpg Quartz (1976)
Hawaiʻi			coral-black-hawa File:Blackcoral colony 600.jpg Black coral
Idaho			garnet-idah File:Idahostargarnet.jpg Star garnet (1967)
Illinois	fluorite-illi File:Fluorite with Iron Pyrite.jpg Fluorite (1965)
Indiana		limestone-indi File:Calcáreo Travertino1.jpg Salem Limestone (1971)
Iowa		quartz-geode File:Geode angle 300x267.jpg quartz Geode (1967)
Kansas
Kentucky	coal-kent File:Coal.jpg Coal (1998)	agate-kent File:Mossagate.pebble.750pix.jpg Kentucky Agate (2000)	pearl-kent File:Freshadama.jpg Freshwater pearl (1986)
Louisiana			agate-loui File:Unknown Polished Rock Macro 2.JPG Agate (1976)
Maine			tourmaline-main File:TourmalineUSGOV.jpg Tourmaline
Maryland			agate-mary File:Agatetumbledriverstone.jpg Patuxent River Stone agate (2004)
Massachusetts	babingtonite File:Babingtonite avec Prenite USA.jpg Babingtonite (1971)	puddingstone-roxbury Roxbury Puddingstone (1983)	rhodonite-massa File:Rodonita2EZ.jpg Rhodonite (1979)
Michigan		coral-petoskey File:Petoskey stone Hexagonaria percarinata 2.jpg Petoskey stone fossilized coral (1965)	chlorastrolite File:Greenstone2.JPG Chlorastrolite (aka Isle Royale greenstone 1972)
Minnesota			agate-minne File:Agatesuperiorminnesota.jpg Lake Superior agate (1969)
Mississippi		petrified-wood-miss File:Petrified wood closeup 2.jpg Petrified wood (1976)
Missouri	galena Galena (1967) Missouri's nickname is the Lead State	mozarkite File:Mozarkite.jpg Mozarkite (1967)
Montana			sapphire-mont File:Sapphiremontanarockcr.jpg Montana Sapphire and File:Montana Moss Agate.jpg Montana Agate
Nebraska		agate-nebr File:Agatetumbledmidwest.jpg Prairie agate (1967)	agate-nebr File:Agatenebraskablue.jpg Blue agate (1967)
Nevada	silver-neva File:SilverUSGOV.jpg Silver Nevada's nickname is the Silver State	sandstone-neva File:Sandstone(quartz)USGOV.jpg Sandstone (1987)	opal-neva File:Virginvalleyblackopal.jpg Precious Gemstone: Black fire opal File:Turq mcGuin bunker.jpg Semiprecious Gemstone: Turquoise
New Hampshire	beryl-newh File:Beryl variety Vorobievite Beryllium cesium aluminum silicate Raymond New Hampshire 2194.jpg Beryl (1985)	granite-newh File:Old Man 4-26-03.jpg Granite (1985) New Hampshire's nickname is the Granite State	quartz-newh File:Quartz smokey New Hampshire15.jpg Smoky quartz (1985)
New Jersey
New Mexico			turquoise-newm File:Turquoise.pebble.700pix.jpg Turquoise (1967)
New York			garnet-newy File:Garnet Group-Pyrope Iron aluminum silicate Barton Mines, Gore Mountain, Warren County, New York 2861.jpg Garnet (1967)
North Carolina	gold-alas File:GoldNuggetUSGOV.jpg Gold (2011)	granite-northc File:Granite softgreen.jpg Granite (1979)	emerald-northc File:Émeraude (Brésil).jpg Emerald (1973)
North Dakota
Ohio			flint File:Flintohio.jpg Ohio flint (1965)
Oklahoma		barite File:Sandrose 2004 03.jpg Rose Rock (Barite)
Oregon		agate-oreg File:ThundereggOR.jpg Thunderegg agate (1965)	labradorite File:Labradoriteoregonsunstone.jpg Oregon sunstone labradorite (1987)
Pennsylvania
Rhode Island	serpentine-rhod File:Serpentine-bowenite.jpg Bowenite serpentine (1966)	cumberlandite File:Cumberlandite.JPG Cumberlandite (1966)
South Carolina		granite-southc File:Granite Yosemite P1160483.jpg Blue granite (1969)	amethyst-southc File:Amethyst Quartz Macro 1.JPG Amethyst (1969)
South Dakota	quartz-southd		agate-southd File:Agatetumblednorthmidwestusa.jpg Fairburn agate (1966)
Tennessee		limestone-tenn File:Limestone with fossils01.jpg Limestone (1979) and File:Tennesseepaintrock.jpg Tennessee Paint Rock Agate (1969)	pearl-tenn File:Freshadama.jpg Tennessee River Pearl (1979)
Texas	silver-texa File:SilverUSGOV.jpg Precious Metal: Silver (2007)	petrified-wood-texa File:Fossilpalmsouthernusa.jpg Oligocene petrified palmwood (1969)	topaz-texa File:TOPAZE4.jpg Gemstone: Texas blue topaz (1969) File:Texasstargem.jpg Gem Cut: "Lone Star Cut" (1977)
Utah	copper-utah File:CopperMineralUSGOV.jpg Copper (1994)	coal-utal File:Coal anthracite.jpg Coal (1991)	topaz-utah File:Topas - Utah-USA.jpg Topaz (1969)
Vermont	talc File:Talc block.jpg Talc	granite-verm File:Granite detail.jpg Granite (1992) and File:Vermont State Capitol.JPG Marble (1992) and File:SlateUSGOV.jpg Slate (1992)	garnet-verm File:Grossularite09.jpg Grossular garnet
Virginia
Washington			petrified-wood-wash File:Petrified wood closeup 2.jpg Petrified wood (1975)
West Virginia		coal-westv File:Coal anthracite.jpg Bituminous Coal (2009)	coral-westv File:Agatized lithostrotionella coral07.jpg Mississippian Lithostrotionella fossil coral (1990)
Wisconsin	galena Galena (1971)	granite-wisc File:Itu granite.JPG Red granite (1971)
Wyoming			neprite-wyom File:Jadewyomingnephrite.jpg Wyoming Nephrite Jade (1967)

See also

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

Endnotes

1. ^{^} California in 1965 became the first state to name an official state rock. A 2010 effort led by State Senator Gloria J. Romero, a Democrat from Los Angeles, sought to remove serpentine from its perch as the state's official stone. Organizations such as the Asbestos Disease Awareness Organization have supported the move as the olive green rock is a source of chrysotile, a form of asbestos that can cause mesothelioma and other forms of cancer. Geologists have rallied to oppose the bill, arguing that there is no way to be harmed from casual exposure to serpentine. The bill did not reach a final vote and died in committee at the end of August 2010. In 1986, California named benitoite as its state gemstone, a form of the mineral barium titanium silicate that is unique to the Golden State and only found in gem quality in San Benito County.
2. ^{^} Colorado is the only state whose geological symbols reflect the national flag's colors: red (rhodochrosite), white (yule marble), and blue (aquamarine).
3. ^{^} Florida's State Gem, moonstone was adopted to highlight Florida's role in the United States' Lunar program which first landed astronauts on the Moon.
4. ^{^} Massachusetts has 3 official state rocks: State Historical Rock (Plymouth Rock), State Explorer Rock (Dighton Rock), and State Building and Monument Stone (Granite).
5. ^{^} A measure passed the Oregon Senate in March 1965 naming the thunderegg as Oregon's state rock, in a move that was supported as a way to stimulate tourism in the state. The thunderegg, a nodule-like geological structure, similar to a geode, that is formed within a rhyolitic lava flow, were said by the Native Americans of Warm Springs to have been created by thunder spirits that lived in the craters of Mount Hood and Mount Jefferson.
6. ^{^} In 2009, West Virginia named bituminous coal as its official state rock, in a resolution that noted that the coal industry plays an "integral part of the economic and social fabric of the state". West Virginia joined Kentucky and Utah which also recognize coal as a state mineral or rock. The drive to name coal as an official state symbol was initiated by a high school student from Wharncliffe, West Virginia, who initiated her project at a school fair and collected 2,500 signatures on a petition that was submitted to legislators.

References

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