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

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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 are the year when that mineral, rock, stone or gemstone was officially made a State symbol or emblem.

State by state listing[change | change source]

State Mineral Rock or Stone Gemstone
Alabama[1]
A sparkling, metallic gray chunk of hematite on a blue background.
Hematite (1967)
A chunk of pure white marble lies on a dark background.
Marble (1969)
Alaska[2]  
Arizona[3]
An irregular piece of native copper on a green background.
Copper[4] (Arizona's nickname is "the Copper State")
 
Arkansas[5]
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)
California[A][6]
An irregularly shaped nugget of native gold ore.
Gold California's nickname is the Golden State
A rough chunk of dark green serpentine with lighter veining.
Serpentine (1965)
A rough rock showing several intense, dark blue benitoite crystals emerging from white natrolite matrix.
Benitoite (1985)
Colorado[B][7]
Intense, transparent, strawberry red crystals of rhodochrosite from Colorado's Sweet Home mine.
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)
A light blue piece of aquamarine cutting rough.
Aquamarine (1971)
Connecticut[8]
A cluster of orange to red almandine garnet crystals.
Almandine Garnet (1977)
 
Delaware[9]    
Florida[C][10]  
A chunk of grayish yellow moonstone which shows fracture lines and a blue glow in some portions.
Moonstone (1970)
Georgia[11]
Intersecting twinned crystals of brown staurolite forming an abstract sculptural mass.
Staurolite (1976)
 
An oval cabochon of pink quartz
Quartz (1976)
Hawaiʻi    
Idaho[13]    
A round cabochon of very dark red garnet which displays a six pointed star effect under intense lighting.
Star garnet (1967)
Illinois[14]
A cluster of purple fluorite crystals with a few crystals of iron pyrite attached.
Fluorite (1965)
   
Indiana[15]    
Iowa[16]  
Half of a sliced geode nodule showing the hollow center lined with white and grayish druzy crystals.
quartz Geode (1967)
 
Kansas      
Kentucky[17]
A chunk of black coal.
Coal (1998)
Louisiana[18]    
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]    
Maryland[20]    
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]
Shiny black crystals of babingtonite on whitish matrix.
Babingtonite (1971)
A rough chunk of rhodonite showing white and intense pink crystals.
Rhodonite (1979)
Michigan[22]  
A polished brown pebble of petoskey stone showing the typically six-sided cellular structure from the fossilized coral.
Petoskey stone fossilized coral (1965)
Minnesota[23]    
Mississippi[24]    
Missouri[25]
A slice of mozarkite with the face showing a swirling pattern of cream, pinks and yellows.
Mozarkite (1967)
 
Montana[26]    
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]  
Tumble polished translucent agate pebbles showing gold, red and white colors.
Prairie agate (1967)
A chunk of seam agate with the split face showing fortification banding in gray, blue and white colors.
Blue agate (1967)
Nevada[28]
An irregularly shaped specimen of native silver ore.
Silver Nevada's nickname is the Silver State
A rough chunk of sandstone with the face showing layering in shades of brown, black and white.
Sandstone (1987)
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]
A yellowish white beryl crystal.
Beryl (1985)
The Old Man of the Mountain granite formation in New Hampshire's White Mountains.
Granite (1985) New Hampshire's nickname is the Granite State
A cluster of transparent and light brown quartz crystals.
Smoky quartz (1985)
New Jersey[30]      
New Mexico[31]    
A polished, freeform cabochon of turquoise blue with brown dots of matrix inclusions.
Turquoise (1967)
New York[32]    
A round, faceted garnet gemstone in deep red with orange undertones.
Garnet (1967)
North Carolina[33]
An irregularly shaped nugget of native gold.
Gold (2011)
The polished face of a granite slab showing an even pattern of white, greenish and black crystals.
Granite (1979)
Translucent green emerald crystals in a cream-colored matrix.
Emerald (1973)
North Dakota[34]      
Ohio[35]    
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]    
Oregon[E][37]  
A sliced thunderegg with the polished face showing a water level pattern in clear, blue and white chalcedony bands.
Thunderegg agate (1965)
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]
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)
Two rough chunks of cumberlandite showing reddish brown coloring with a few whitish streaks.
 
South Carolina[40]  
A closeup of the polished face of a slab of granite showing grains of white, bluish gray and black.
Blue granite (1969)
A cluster of light purple to violet amethyst crystals.
Amethyst (1969)
South Dakota[41]  
A group of tumble polished agates showing banding in red, orange and white with crystal interiors.
Fairburn agate (1966)
Tennessee[42]  
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)
Texas[43]
An irregularly shaped specimen of native silver ore.
Precious Metal: Silver (2007)
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]
An irregular piece of native copper on a green background.
Copper (1994)
A chunk of black coal.
Coal (1991)
A terminated raw, golden topaz crystal.
Topaz (1969)
Vermont[45]
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)
Virginia[46]      
Washington[47]    
West Virginia[F][48]  
A polished slab showing the cellular structure from the fossilized coral.
Mississippian Lithostrotionella fossil coral (1990)
Wisconsin[50]
A rough chunk of granite showing grains of red, pink, white, gray and black.
Red granite (1971)
 
Wyoming[51]    

References[change | change source]

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