| STATE |
ROCK |
MINERAL |
GEMSTONE |
FOSSIL |
Notes of Interest |
| Alabama |
Marble |
Hematite |
Star
Blue Quartz |
Whale -
Basilosaurus cetoides |
Fossil remains of the Basilosaurus cetoides may not be removed from the state without prior written approval of the governor. |
| Alaska |
|
Gold |
Jade |
Wooly Mammoth |
Alaska has large deposits of the jade, including an entire mountain of jade on the Seward Peninsula. |
| Arizona |
|
|
Turquoise |
Petrified wood |
Turquoise can be found throughout the Southwest and is composed of hydrous oxide of aluminum and copper. |
| Arkansas |
Bauxite |
White Quartz |
Diamond |
|
Arkansas is the only diamond-producing state in the United States. John M Huddleston found the first diamonds near Murfreesboro in 1906. |
| California |
Serpentine |
Gold |
Benitoite |
Saber Toothed Cat |
Sometimes called the " blue diamond", benitoite was first discovered near the headwaters of the San Benito River. |
| Colorado |
Yule marble |
Rhodochrosite |
Aquamarine |
Stegosaurus |
The world's largest Rhodochrosite crystal, called the Alma King, was found in the Sweet Home Mine near Alma (Park County), Colorado |
| Connecticut |
|
Garnet |
|
Eubrontes giganteus |
Connecticut is one of the finest sources in the world of the almandine garnet. |
| Delaware |
|
Sillimanite |
|
Belemnite |
The belemnite was, in essence, a squid with a conical shell. |
| Florida |
Agatized Coral |
|
Moonstone |
Agatized Coral |
Ironically, the moonstone, a form of the mineral feldspar, is not found naturally in Florida. It was named the state gem to honor the space program. |
| Georgia |
|
Staurolite |
Quartz |
Shark tooth |
Staurolite is abundant in north Georgia, the distinctively twinned, crystals are collected as good luck charms and also known as fairy stones. |
| Hawaii |
|
|
Black Coral |
|
|
| Idaho |
|
|
Star garnet |
Equus simplicidens |
The star garnet from Emerald Creek, Idaho, is the best garnet outside of India to exhibit the star phenomenon. |
| Illinois |
|
Fluorite |
|
Tullimonstrum gregarium |
Illinois is the largest producer of Fluorite in the United States. Fluorite is used in making steel, enamels, aluminum, glass, and many chemicals |
| Indiana |
Salem Limestone |
|
|
|
|
| Iowa |
Geode |
|
|
|
Geodes are found in limestone formations and have a hard outer shell. When carefully broken open, a sparkling lining of mineral crystals, most often quartz and calcite, is revealed.
|
| Kansas |
|
|
|
|
|
| Kentucky |
Kentucky Agate |
Coal |
Freshwater pearl |
Brachiopod |
|
| Louisiana |
|
Agate |
|
Petrified Palmwood |
|
| Maine |
|
Tourmaline |
|
Pertica quadrifaria |
Pertica quadrifaria (a plant fossil) was first discovered in Maine. Well-preserved remains of Pertica are found at only three other places in the world besides Maine. |
| Maryland |
|
|
Patuxent River Stone |
Ecphora gardnerae
& Astrodon johnstoni |
The Patuxent River Stone is actually an agate, a cryptocrystalline form of quartz. Found only in Maryland, the Patuxent River Stone's colors of red and yellow reflect the Maryland State Flag |
| Massachuetts |
Roxbury Pudding Stone & Granite |
Babingtonite |
Rhodonite |
Dinosaur foot track |
MA is one of the few locations in the world where Babingtonite, usually jet black material with a brilliant submetallic luste,r is found. |
| Michigan |
|
|
Chlorastrolite (Greenstone) |
Petoskey Stone (fossilized coral) |
Chlorastrolite ranges in color from yellow-green to almost black and when polished shows a turtleback pattern. |
| Minnesota |
|
|
Lake Superior agate |
|
Despite their name, Lake Superior agates can be found throughout much of Minnesota |
| Mississippi |
Petrified wood |
|
|
Fossil whale |
|
| Missouri |
Mozarkite
(chert) |
Galena |
|
Crinoid
Delocrinus missouriensis |
The crinoid (Delocrinus missouriensis) is a mineralization of an animal which, because of its plant-like appearance, was called the "sea lily." |
| Montana |
|
|
Sapphire & Montana Agate |
Duck-billed Dinosaur (Maiasaura peeblesorum) |
Yogo mines have produced an estimated forty million dollars in blue sapphires. |
| Nebraska |
Prairie Agate |
|
Blue Chalcedony |
Mammoth |
One mammoth found in Lincoln County, Archidiskodon imperator maibeni, was one of the world's largest elephant fossils. |
| Nevada |
Sandstone |
Silver (metal) |
Black Fire Opal & Turquoise |
Ichthyosaur |
Northern Nevada’s Virgin
Valley is the only place in North
America where black fire opal is
found in any significant quantity.
|
| New Hampshire |
Granite |
Beryl |
Smoky Quartz |
|
|
| New Jersey |
|
|
|
Hadrosaurus foulkii |
|
| New Mexico |
|
|
Turquoise |
Rioarribasaurus |
|
| New York |
|
|
Garnet |
Sea Scorpian
Eurypterus remipes |
Sea scorpions are extinct carnivorous marine arthropods. These fierce hunters had a scorpion-like stinger which may have contained poison, 3 pairs of jointed legs, 2 clawed arms, and strong jaws. |
| North Carolina |
Granite |
|
Emerald |
|
A greater variety of minerals, more than 300, have been found in North Carolina than in any other state. |
| North Dakota |
|
|
|
Teredo petrified wood |
|
| Ohio |
|
|
Flint |
Isotelus (trilobite) |
|
| Oklahoma |
Barite "rose" |
|
Hourglass Selenite Crystal |
Saurophaganax maximus (Theropod dinosaur) |
|
| Oregon |
"Thunder egg" |
|
Sunstone |
Metasequoia |
Oregon is also the only place in the world that this gem grade material is found with copper in it. |
| Pennsylvania
|
|
|
|
Phacops rana |
|
| Rhode Island |
Cumberlandite |
Bowenite
(antigorite) |
|
|
|
| South Carolina |
Blue granite |
|
Amethyst |
|
The curator of mineralogy for the Smithsonian Institute has graded one of the largest early specimens of Amethyst from this SC as the finest seen in this country. |
| South Dakota |
|
Rose Quartz |
Fairburn Agate
| Triceratops |
|
| Tennessee |
Limestone |
|
Tennesseee Pearl |
Pterotrigonia thoracica |
Tennessee River pearls are of all colors and they are “natural” as the mussel made them – all pearl, all the way through. They have been found in various shapes – spherical, pear-shaped and baroque, or irregular. |
| Texas
| Petrified Palm Wood |
|
Blue Topaz |
Pleurocoelus |
Texas also has a state gemstone cut: The Lone Star cut. |
| Utah |
Coal |
Copper |
Topaz |
Allosaurus |
|
| Vermont |
Marble,
Slate, Granite |
Talc |
Grossular Garnet |
Delphinapterus leucas |
Grossular garnet from the Belvidere Mine at Eden Mills is thought to be the finest specimen of its kind anywhere. |
| Virginia |
|
|
|
Chesapecten jeffersonius |
|
| Washington |
|
|
Petrified Wood
Mammoth |
Columbian Mammoth (Mammuthus columbi) |
|
| West Virginia |
|
|
Chalcedony Coral |
|
|
| Wisconsin |
Red Granite |
Galena |
|
Trilobite (Calymene celebra) |
|
| Wyoming |
|
|
Nephrite Jade |
knightia ( herring) & Triceratops |
|
