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Official State Rocks, Minerals, Gems, Etc.

State	Name	Designated as	Year
All official rocks, minerals, gems, stones, precious metals and crystals listed by state.
Alabama	Hematite (Red iron ore)	Official mineral	1967
Alabama	Marble	Official rock	1969
Alabama	Star Blue Quartz	Official gemstone	1990
Alaska	Jade	Official state gem	1968
Alaska	Gold	Official state mineral	1968
Arizona	Turquoise	Official state gemstone	1974
Arkansas	Diamond	Official state gem	1967
Arkansas	Quartz crystal	Official state mineral	1967
Arkansas	Bauxite	Official state rock	1967
California	Native gold	Official State Mineral and mineralogic emblem	1965
California	Serpentine	Official State Rock and lithologic emblem	1965
California	Benitoite	Official state gemstone	1985
Colorado	Aquamarine	State gemstone	1971
Colorado	Rhodochrosite	State mineral	2002
Colorado	Yule marble	State rock	2004
Connecticut	Garnet	State mineral	1977
Delaware	Sillimanite	Official state mineral	1977
Florida	Moonstone	Florida state gem	1970
Florida	Agatized coral	Florida state stone	1979
Georgia	Quartz	Official Georgia state gem	1976
Georgia	Staurolite	Official Georgia state mineral	1976
Hawaii	Black coral	Official gem	1987
Idaho	Star garnet	Official state stone, or gem	1967
Illinois	Calcium flouride (Flourite)	Official state mineral	1965
Indiana	Limestone (Salem limestone)	Official stone	1971
Iowa	Geode	State rock	1967
Kansas	(None)
Kentucky	Freshwater-pearl	State gemstone	1986
Kentucky	Coal	Official mineral	1998
Kentucky	Kentucky agate	Official rock	2000
Louisiana	Agate	Official state gemstone	1976
Maine	Tourmaline	Official mineral	1971
Maryland	Patuxent River Stone	State gem	2004
Massachusetts	Babingtonite	Mineral or mineral emblem	1971
Massachusetts	Rhodonite	Gem or gem emblem	1979
Massachusetts	Granite	Building and monument stone	1983
Massachusetts	Dighton Rock	Explorer rock	1983
Massachusetts	Plymouth Rock	Historical rock	1983
Massachusetts	Roxbury Puddingstone (Roxbury Conglomerate)	Rock or rock emblem	1983
Michigan	Petoskey stone	State stone	1965
Michigan	Chlorastrolite	State gem	1972
Minnesota	Lake Superior agate	Official gemstone	1969
Mississippi	Petrified wood	State stone	1976
Missouri	Galena	Official mineral	1967
Missouri	Mozarkite	Official rock and lithologic emblem	1967
Montana	Montana agate	Official Montana state gem stone	1969
Montana	Sapphire	Official Montana state gem stone	1969
Nebraska	Chalcedony stone, Blue agate	State gem stone	1943
Nebraska	Chalcedony stone, Prairie agate	State rock	1943
Nevada	Virgin Valley black fire opal	Official state precious gemstone	1987
Nevada	Nevada turquoise	Official state semiprecious gemstone	1987
Nevada	Sandstone	Official state rock	1987
New Hampshire	Granite	Official state rock	1985
New Hampshire	Beryl	Official state mineral	1985
New Hampshire	Smoky quartz	Official state gem	1985
New Jersey	(None)
New Mexico	Turquoise	Official gem	1967
New York	Garnet	Official gem	1969
North Carolina	Emerald	Official State precious stone	1973
North Carolina	Granite	Official State rock	1979
North Dakota	(None)
Ohio	Ohio flint (Crypto-crystalline variety of quartz)	Official gem stone	1965
Oklahoma	Barite Rose (Rose rock)	Official rock	1968
Oklahoma	Hourglass Selenite Crystal	Official crystal	2005
Oregon	Thunderegg	Official rock	1965
Oregon	Sunstone	Official gemstone	1987
Pennsylvania	(None)
Rhode Island	Cumderlandite	Official state rock	1966
Rhode Island	Bowenite	Official state mineral	1966
South Carolina	Amethyst	Official gem stone	1969
South Carolina	Blue granite	Official stone	1969
South Dakota	Fairburn agate	Official state gemstone	1966
South Dakota	Rose quartz	Official state mineral stone	1966
South Dakota	Black hills gold	Official jewelry	1988
Tennessee	Agate	Official state stone	1969
Tennessee	Tennessee pearl	Official state gem	1979
Tennessee	Calcium carbonate (Limestone)	Official state rock	1979
Texas	Blue topaz	State gemstone	1969
Texas	Petrified palmwood	State stone	1969
Texas	Silver	Precious metal	2007
Utah	Topaz	State gem	1969
Utah	Coal	State rock	1991
Utah	Copper	State mineral	1994
Vermont	Grossular garnet	State gem	1991
Vermont	Marble	State rock	1991
Vermont	Granite	State rock	1991
Vermont	Slate	State rock	1991
Vermont	Talc	Mineral	1991
Virginia	(None)
Washington	Petrified wood	Official gem	1975
West Virginia	Calcedony	State gem	1990
Wisconsin	Galena (Lead sulfide)	State mineral	1971
Wisconsin	Red granite	State rock	1971
Wyoming	Jade	Official gemstone	1967
Gemstones of the World, by Walter Schumann, 272 pages, Sterling; 3 Rev Exp edition (January 1, 2007) Gemstones of the World is truly the single volume that every hobbyist, jeweler, jewelry maker, and rockhound needs: it’s the cornerstone of the field. And this updated edition contains a host of new findings on “Gemstones for Collectors,” additional gems in the “Table of Constants,” and the “double fraction” figures that experts have long wanted—a very special new feature..
Rocks & Minerals, by Chris Pellant, 256 pages, DK ADULT; 1st edition (September 1, 2002) The Smithsonian Handbook of Rocks and Minerals combines 600 vivid full--color photos with descriptions of more than 500 specimens. This authoritative and systematic photographic approach, with words never separated from pictures, marks a new generation of identification guides.
Gemstones, by Cally Hall, 160 pages, DK ADULT; 2 edition (May 15, 2002) The Smithsonian Handbook of Gemstones is packed with more than 800 vivid full-color photographs of more than 130 varieties of cut and uncut stones, organic gemstones, and precious metals. With authoritative text, clear photography, and a systematic approach, this concise guide to identification enables you to recognize each gemstone instantly..
Rocks & Minerals, DK Eyewitness Book for ages 9-12, 72 pages, DK CHILDREN (August 2, 2004) Here is a spectacular and informative guide to the amazing world beneath our feet. Stunning color photographs of rocks, fossils, minerals, precious metals, crystals, jewels and gemstones give the reader a unique "eyewitness" insight into the evolution and composition of the Earth. See rocks that have come from outer space, stalactites as old as dinosaurs, the strange and beautiful shapes of natural crystals and priceless nuggets of gold, silver and platinum..
Crystal & Gem, DK Eyewitness Book for ages 9-12, 72 pages, DK CHILDREN (June 25, 2007) Now kids can learn the answers to questions about the earth, sea, and air with these earth science lesson books. Discover the fascinating world of crystals and gems - their beauty, uses, structure and amazing variety. This DK Eye Witness book will tell you all about rock gems and diamonds. Here is a spectacular and informative guide to the amazing world of crystals and gems. Superb color photographs of crystals, jewels and gemstones of every color, size and shape offer a unique "eyewitness" insight into their extraordinary beauty and variety..