Alabama
Little River
Alabama
Marble
Alabama
Hematite
Alaska
Gold
Arizona
Copper
Arkansas
Quartz Crystal
Arkansas
Bauxite
California
Gold
California
Serpentine
Colorado
Rhodochrosite
Colorado
Yule Marble
Connecticut
Almandine Garnet
D.C.
Potomac Bluestone
Delaware
Sillimanite
Georgia
Staurolite
Illinois
Dolostone
Illinois
Fluorite
Indiana
Wabash River
Indiana
Limestone
Iowa
Geode
Kentucky
Kentucky Agate
Kentucky
Coal
Louisiana
Agate
Massachusetts
Babingtonite
Massachusetts
Plymouth Rock
Massachusetts
Dighton Rock
Massachusetts
Granite
Massachusetts
Rolling Rock
Massachusetts
Roxbury Puddingstone
Michigan
Petoskey Stone
Mississippi
Petrified Wood
Mississippi
Mississippi Opal
Missouri
Galena
Missouri
Mozarkite
Nebraska
Prairie Agate
Nebraska
Platte River
Nevada
Sandstone
Nevada
Silver
New Hampshire
Granite
New Hampshire
Beryl
North Carolina
Gold
North Carolina
Granite
Oklahoma
Hourglass Selenite Crystal
Oklahoma
Rose Rock
Oregon
Oregonite & Josephinite
Oregon
Thunderegg
Rhode Island
Cumberlandite
Rhode Island
Bowenite
South Carolina
Blue Granite
South Dakota
Black Hills Gold
South Dakota
Rose Quartz
Tennessee
Limestone
Tennessee
Agate
Texas
Silver
Texas
Petrified Palmwood
Utah
Copper-
Utah
Coal 
Vermont
Marble
Vermont
Slate
Vermont
Talc
Vermont
Granite
Virginia
Nelsonite
Washington
Palouse Falls
West Virginia
Bituminous Coal
Wisconsin
Galena
Wisconsin
Red Granite