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

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

Some American states have made a state mineral, rock, stone or gemstone Not every state has an official state mineral, rock, stone and/or gemstone, however.

In the chart below, the year in parentheses shows when each mineral, rock, stone, or gemstone became an official state symbol or emblem.

More information State, Mineral ...
State Mineral Rock or Stone Gemstone
Alabama[1] hematite-alab
A sparkling, metallic gray chunk of hematite on a blue background.
Hematite (1967)
 marble-alab
A chunk of pure white marble lies on a dark background.
Marble (1969)
 quartz-alab
A bluish gray round cabochon of quartz showing a four rayed star effect under intense lighting.
Star Blue Quartz (1990)
Alaska[2] gold-alas
An irregularly shaped nugget of native gold.
Gold
   neprhite-alas
An irregular chunk of celedon green jade.
Nephrite Jade
Arizona[3] copper-ariz
An irregular piece of native copper on a green background.
Copper[4] (Arizona's nickname is "the Copper State")
   turquoise-ariz
A rough nodule of turquoise in brown matrix with a split face showing areas of intense turquoise blue.
Turquoise
Arkansas[5] quartz-ark
A cluster of clear, colorless quartz crystals.
Quartz
 bauxite-ark
A slab of bauxite displaying brown orbicular formations which are approximately the size of the one cent coin which lies on top of the slab.
Bauxite (1967)
 diamond-ark
Several white diamonds with brilliant cuts lie scattered across a white background.
Diamond
California[A][6] gold-cali
An irregularly shaped nugget of native gold ore.
Gold California's nickname is the Golden State
 serpentine-cali
A rough chunk of dark green serpentine with lighter veining.
Serpentine (1965)
 benitoite
A rough rock showing several intense, dark blue benitoite crystals emerging from white natrolite matrix.
Benitoite (1985)
Colorado[B][7] rhodochrosite-colo
Intense, transparent, strawberry red crystals of rhodochrosite from Colorado's Sweet Home mine.
Rhodochrosite (2002)
 marble-colo
Large blocks of partially worked white marble lie on the ground at Colorado's Marble Mill site with the National Historical marker in the background.
Yule marble (2004)
 aquamarine-colo
A light blue piece of aquamarine cutting rough.
Aquamarine (1971)
Connecticut[8] garnet-conn
A cluster of orange to red almandine garnet crystals.
Almandine Garnet (1977)
 brownstone  
Delaware[9] sillimanite
A long crystal of light purple sillimanite on a white background.
Sillimanite
    
Florida[C][10]   coral-agatized-flor
A nodule of gray fossilized coral which has been sliced in half with the halves lying opposite each other and showing the hollow center.
Agatized Coral (1979)
 moonstone
A chunk of grayish yellow moonstone which shows fracture lines and a blue glow in some portions.
Moonstone (1970)
Georgia[11] staurolite
Intersecting twinned crystals of brown staurolite forming an abstract sculptural mass.
Staurolite (1976)
   quartz-rose-geor
An oval cabochon of pink quartz
Quartz (1976)
Hawaiʻi     coral-black-hawa
Black branches of coral, along which are arranged bright yellow polyps.
Black coral [12]
Idaho[13]     garnet-idah
A round cabochon of very dark red garnet which displays a six pointed star effect under intense lighting.
Star garnet (1967)
Illinois[14] fluorite-illi
A cluster of purple fluorite crystals with a few crystals of iron pyrite attached.
Fluorite (1965)
    
Indiana[15]   limestone-indi
A chunk of limestone showing yellowish and white banding.
Salem Limestone (1971)
  
Iowa[16]   quartz-geode
Half of a sliced geode nodule showing the hollow center lined with white and grayish druzy crystals.
quartz Geode (1967)
  
Kansas      
Kentucky[17] coal-kent
A chunk of black coal.
Coal (1998)
 agate-kent
A smooth pebble of white agate with black and green dendrite formations.
Kentucky Agate (2000)
 pearl-kent
A string of white pearls arranged in a twisted pile on a white background.
Freshwater pearl (1986)
Louisiana[18]     agate-loui
A chunk of agate in grayish and golden colors with the split face showing internal fortification banding along with a black dendritic formation.
Agate (1976)
Maine[19]     tourmaline-main
Dark bluish and green or black, rod-like tourmaline crystals emerging from clear quartz holding matrix.
Tourmaline
Maryland[20]     agate-mary
Peach reds and yellows with threadlike mossy and cell-like formations in semi-smooth tumbled agate pebbles.
Patuxent River Stone agate (2004)
Massachusetts[D][21] babingtonite
Shiny black crystals of babingtonite on whitish matrix.
Babingtonite (1971)
 puddingstone-roxbury rhodonite-massa
A rough chunk of rhodonite showing white and intense pink crystals.
Rhodonite (1979)
Michigan[22]   coral-petoskey
A polished brown pebble of petoskey stone showing the typically six-sided cellular structure from the fossilized coral.
Petoskey stone fossilized coral (1965)
 chlorastrolite
A polished cabochon of green pumpellyite showing the desirable chatoyant, cell-like structure found in the Michigan material.
Chlorastrolite (aka Isle Royale greenstone 1972)
Minnesota[23]     agate-minne
An oval cabochon of Lake Superior agate which displays the typical tight fortification banding in shades of reds, yellows and white.
Lake Superior agate (1969)
Mississippi[24]   petrified-wood-miss
A sliced section of a petrified wood log showing exterior fossilized bark and black, white, red and yellow agate in the interior.
Petrified wood (1976)
  
Missouri[25] galena mozarkite
A slice of mozarkite with the face showing a swirling pattern of cream, pinks and yellows.
Mozarkite (1967)
  
Montana[26]     sapphire-mont
A custom shield cut sapphire from Rock Creek, Montana in deep blue with a slight green undertone or zoning.
Montana Sapphire

and
A cloudy translucent white polished shield-shaped cabochon of Montana moss agate with puffy black dendrites arranged around a central area of golden fortifications.
Montana Agate
Nebraska[27]   agate-nebr
Tumble polished translucent agate pebbles showing gold, red and white colors.
Prairie agate (1967)
 agate-nebr
A chunk of seam agate with the split face showing fortification banding in gray, blue and white colors.
Blue agate (1967)
Nevada[28] silver-neva
An irregularly shaped specimen of native silver ore.
Silver Nevada's nickname is the Silver State
 sandstone-neva
A rough chunk of sandstone with the face showing layering in shades of brown, black and white.
Sandstone (1987)
 opal-neva
A freeform cabochon of black Virgin Valley wood replacement opal with red, blue and green fire showing against the dark base opal.
Precious Gemstone: Black fire opal

Three rough chunks of raw turquoise in brown matrix are at the top of the picture, below which are a range of thirteen finished cabochons showing showing various colors ranging from green to light turquoise blue, and a range of spiderweb matrix ranging from none to light yellow to deep brown.
Semiprecious Gemstone: Turquoise
New Hampshire[29] beryl-newh
A yellowish white beryl crystal.
Beryl (1985)
 granite-newh
The Old Man of the Mountain granite formation in New Hampshire's White Mountains.
Granite (1985) New Hampshire's nickname is the Granite State
 quartz-newh
A cluster of transparent and light brown quartz crystals.
Smoky quartz (1985)
New Jersey[30]      
New Mexico[31]     turquoise-newm
A polished, freeform cabochon of turquoise blue with brown dots of matrix inclusions.
Turquoise (1967)
New York[32]     garnet-newy
A round, faceted garnet gemstone in deep red with orange undertones.
Garnet (1967)
North Carolina[33] gold-alas
An irregularly shaped nugget of native gold.
Gold (2011)
 granite-northc
The polished face of a granite slab showing an even pattern of white, greenish and black crystals.
Granite (1979)
 emerald-northc
Translucent green emerald crystals in a cream-colored matrix.
Emerald (1973)
North Dakota[34]      
Ohio[35]     flint
A freeform cabochon of Ohio flint with a pattern of cream and ochre bands and a bluish black pattern at one end.
Ohio flint (1965)
Oklahoma[36]   barite
A rough, oval desert rose formation made up of barite crystals.
Rose Rock (Barite)
  
Oregon[E][37]   agate-oreg
A sliced thunderegg with the polished face showing a water level pattern in clear, blue and white chalcedony bands.
Thunderegg agate (1965)
 labradorite
Four faceted gemstones in various cuts showing some of the Oregon labradorite colors, including dichroic red green, red and yellow bicolor, clear with copper shiller streaking, and teal blue-green.
Oregon sunstone labradorite (1987)
Pennsylvania[38]      
Rhode Island[39] serpentine-rhod
The face of a polished slab of bowenite serpentine with a wavy pattern in colors ranging from intense jade green to yellows.
Bowenite serpentine (1966)
 cumberlandite
Two rough chunks of cumberlandite showing reddish brown coloring with a few whitish streaks.
Cumberlandite (1966)
  
South Carolina[40]   granite-southc
A closeup of the polished face of a slab of granite showing grains of white, bluish gray and black.
Blue granite (1969)
 amethyst-southc
A cluster of light purple to violet amethyst crystals.
Amethyst (1969)
South Dakota[41] quartz-southd   agate-southd
A group of tumble polished agates showing banding in red, orange and white with crystal interiors.
Fairburn agate (1966)
Tennessee[42]   limestone-tenn
Closup view of an unpolished, gray limestone slab showing fossil shell and other inclusions.
Limestone (1979)

and
A round cabochon of Tennessee paint rock showing clear holding agate, white banding and a red mossy formation.
Tennessee Paint Rock Agate (1969)
 pearl-tenn
A string of white pearls arranged in a twisted pile on a white background.
Tennessee River Pearl (1979)
Texas[43] silver-texa
An irregularly shaped specimen of native silver ore.
Precious Metal: Silver (2007)
 petrified-wood-texa
An oval palmwood cabochon in a buff color with dark dots formed when sclerenchyma structures in the wood was replaced by chalcedony.
Oligocene petrified palmwood (1969)
 topaz-texa
A light blue chunk of topaz cutting rough.
Gemstone: Texas blue topaz (1969)

A line drawing showing the five-pointed star feature in the pavilion of the Lone Star gemstone cut.
Gem Cut: "Lone Star Cut" (1977)
Utah[44] copper-utah
An irregular piece of native copper on a green background.
Copper (1994)
 coal-utal
A chunk of black coal.
Coal (1991)
 topaz-utah
A terminated raw, golden topaz crystal.
Topaz (1969)
Vermont[45] talc
A chunk of translucent white talc.
Talc
 granite-verm
A buff-colored boulder of granite.
Granite (1992)

and
The white marble state capitol building in Montpelier.
Marble (1992)

and
An unpolished, irregular slab of gray slate.
Slate (1992)
 garnet-verm
Virginia[46]      
Washington[47]     petrified-wood-wash
A sliced section of a petrified wood log showing exterior fossilized bark and black, white, red and yellow agate in the interior.
Petrified wood (1975)
West Virginia[F][48]   coal-westv
A chunk of black coal.
Bituminous Coal (2009)[49]
 coral-westv
A polished slab showing the cellular structure from the fossilized coral.
Mississippian Lithostrotionella fossil coral (1990)
Wisconsin[50] galena granite-wisc
A rough chunk of granite showing grains of red, pink, white, gray and black.
Red granite (1971)
  
Wyoming[51]     neprite-wyom
A freeform triangular cabochon of olive-green Wyoming nephrite jade.
Wyoming Nephrite Jade (1967)
Close
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