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Official State Gems

All official state gems listed by state.
State Name Designated as Year
Alabama Star Blue Quartz Official gemstone 1990
Alaska Jade Official state gem 1968
Arizona Turquoise Official state gemstone 1974
Arkansas Diamond Official state gem 1967
California Benitoite Official state gemstone 1985
Colorado Aquamarine State gemstone 1971
Connecticut      
Delaware      
Florida Moonstone Florida state gem 1970
Georgia Quartz Official Georgia state gem 1976
Hawaii Black coral Official gem 1987
Idaho Star garnet Official state stone, or gem 1967
Illinois      
Indiana      
Iowa      
Kansas      
Kentucky Freshwater-pearl State gemstone 1986
Louisiana Agate Official state gemstone 1976
Maine      
Maryland Patuxent River Stone State gem 2004
Massachusetts Rhodonite Gem or gem emblem 1979
Michigan Chlorastrolite State gem 1972
Minnesota Lake Superior agate Official gemstone 1969
Mississippi      
Missouri      
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
Nevada Virgin Valley black fire opal Official state precious gemstone 1987
Nevada Nevada turquoise Official state semiprecious gemstone 1987
New Hampshire Smoky quartz Official state gem 1985
New Jersey      
New Mexico Turquoise Official gem 1967
New York Garnet Official gem 1969
North Carolina      
North Dakota      
Ohio Ohio flint (Crypto-crystalline variety of quartz) Official gem stone 1965
Oklahoma      
Oregon Sunstone Official gemstone 1987
Pennsylvania      
Rhode Island      
South Carolina Amethyst Official gem stone 1969
South Dakota Fairburn agate Official state gemstone 1966
Tennessee Tennessee pearl Official state gem 1979
Texas Blue topaz State gemstone 1969
Utah Topaz State gem 1969
Vermont Grossular garnet State gem 1991
Virginia      
Washington Petrified wood Official gem 1975
West Virginia Calcedony State gem 1990
Wisconsin      
Wyoming Jade Official gemstone 1967
Gemstones of the World 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 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 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 and Minerals 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 and Gem 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..

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