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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 Stone . In ...

  3. Devil's Hopyard State Park - Wikipedia

    en.wikipedia.org/wiki/Devil's_Hopyard_State_Park

    Devil's Hopyard State Park is a public recreation area located at the Eightmile River 's Chapman Falls in the town of East Haddam, Connecticut. The 1,000-acre (400 ha) state park includes facilities for hiking, fishing, bicycling, picnicking, and camping. It is managed by the Connecticut Department of Energy and Environmental Protection.

  4. Mashamoquet Brook State Park - Wikipedia

    en.wikipedia.org/wiki/Mashamoquet_Brook_State_Park

    Mashamoquet Brook State Park ( / mæʃˈmʌkɪt -/ mash-MUH-kit) is a public recreation area in the town of Pomfret, Connecticut. Notable features of the state park include the Wolf Den national historic site, the Brayton Grist Mill, and the Table Rock and Indian Chair natural stone formations. The state park offers facilities for camping ...

  5. Diamond (gemstone) - Wikipedia

    en.wikipedia.org/wiki/Diamond_(gemstone)

    Diamond[ a] is a gemstone formed by cutting a raw diamond. Diamonds are one of the best-known and most sought-after gems, and they have been used as decorative items since ancient times. The hardness of diamond and its high dispersion of light —giving the diamond its characteristic "fire"—make it useful for industrial applications and ...

  6. List of gemstones by species - Wikipedia

    en.wikipedia.org/wiki/List_of_gemstones_by_species

    5 Chatoyant gems. 6 Asterism. 7 See also. 8 References. 9 Further reading. Toggle the table of contents. List of gemstones by species. 6 languages.

  7. Grassy Cove - Wikipedia

    en.wikipedia.org/wiki/Grassy_Cove

    Grassy Cove Saltpeter Cave, located on the eastern slope of Brady Mountain, is the sixteenth longest cave in Tennessee [4] and one of the 100 longest caves in the United States. [5] Other caves in the cove include Windlass Cave, Bristow Cave, Mill Cave, Run to the Mill Cave, and Milksick Cave. An elevation map of Grassy Cove in Cumberland ...

  8. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    Gemstone. Group of precious and semiprecious stones—both uncut and faceted—including ( clockwise from top left) diamond, uncut synthetic sapphire, ruby, uncut emerald, and amethyst crystal cluster. A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or ...

  9. Luminous gemstones - Wikipedia

    en.wikipedia.org/wiki/Luminous_gemstones

    The first theme is using legendary luminous gems to illuminate buildings, for navigation lights on ships, or sometimes as guiding lights for lost persons (Ball 1938: 498–500). In India, the earliest country in which fine gemstones were known, belief in luminous gems dates back some twenty-five centuries.