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  2. List of U.S. state minerals, rocks, stones and gemstones

    en.wikipedia.org/wiki/List_of_U.S._state...

    ^ Florida's state gem, moonstone, was adopted to highlight Florida's role in the United States' Lunar program, which landed the first astronauts on the Moon. [ 81 ] ^ Since 1983, Massachusetts has had 3 other official state rocks: State Historical Rock ( Plymouth Rock ), State Explorer Rock ( Dighton Rock ), and State Building and Monument ...

  3. Fairburn Agate - Wikipedia

    en.wikipedia.org/wiki/Fairburn_Agate

    Cryptocrystalline silica. Mohs scale hardness. 6.5–7. Luster. Waxy. The Fairburn Agate is a type of gemstone found in the agate beds of Southwestern South Dakota and Northwestern Nebraska. It is also the state gemstone of South Dakota. [1] Fairburns are characterized from other types of agate by their colors and the shape of the bands. [1][2]

  4. List of South Dakota state symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_South_Dakota_state...

    This is a list of the official state symbols of the U.S. state of South Dakota. [1] [2] ... Gemstone: Fairburn agate: 1966 [3] Soil: Houdek loam: 1990 Culture. Type ...

  5. Black Hills gold jewelry - Wikipedia

    en.wikipedia.org/wiki/Black_Hills_gold_jewelry

    Black Hills gold jewelry is a type of jewelry manufactured in the Black Hills of South Dakota. It was first created in the 1870s during the Black Hills Gold Rush by a French goldsmith named Henri LeBeau, who is said to have dreamed about the design after passing out from thirst and starvation. Black Hills gold jewelry depicts leaves, grape ...

  6. Jewel Cave National Monument - Wikipedia

    en.wikipedia.org/wiki/Jewel_Cave_National_Monument

    Jewel Cave National Monument contains Jewel Cave, currently the fifth longest cave in the world and second longest cave in the United States, with 220.01 miles (354.07 km) of mapped passageways as of May 2024. [3][4][5] It is located approximately 13 miles (21 km) west of the town of Custer in Black Hills of South Dakota.

  7. Etta, South Dakota - Wikipedia

    en.wikipedia.org/wiki/Etta,_South_Dakota

    4,577 ft (1,395 m) Time zone. UTC-7 (MST) • Summer (DST) UTC-6 (MDT) Etta, also known as Etta Camp and Etta Mine, is a ghost town in Pennington County, South Dakota, United States. It was a successful mining town, known for its discovery of the largest spodumene crystal ever found.

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