-
Alabama
Marble -
Alabama
Hematite -
Alabama
Little River -
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
Roxbury Puddingstone -
Massachusetts
Babingtonite -
Massachusetts
Plymouth Rock -
Massachusetts
Dighton Rock -
Massachusetts
Granite -
Massachusetts
Rolling Rock -
Michigan
Petoskey Stone -
Mississippi
Mississippi Opal -
Mississippi
Petrified Wood -
Missouri
Mozarkite -
Missouri
Galena -
Nebraska
Prairie Agate -
Nebraska
Platte River -
Nevada
Sandstone -
Nevada
Silver -
New Hampshire
Granite -
New Hampshire
Beryl -
North Carolina
Granite -
North Carolina
Gold -
Oklahoma
Hourglass Selenite Crystal -
Oklahoma
Rose Rock -
Oregon
Thunderegg -
Oregon
Oregonite & Josephinite -
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
Granite -
Vermont
Marble -
Vermont
Slate -
Vermont
Talc -
Virginia
Nelsonite -
Washington
Palouse Falls -
West Virginia
Bituminous Coal -
Wisconsin
Galena -
Wisconsin
Red Granite