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  2. List of sandstones - Wikipedia

    en.wikipedia.org/wiki/List_of_sandstones

    This is a list of types of sandstone that have been or are used economically as natural stone for building and other commercial or artistic purposes. Trans-regional [ edit ]

  3. Turquoise - Wikipedia

    en.wikipedia.org/wiki/Turquoise

    Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula Cu Al 6 (PO 4) 4 8 ·4H 2 O.It is rare and valuable in finer grades and has been prized as a gemstone for millennia due to its hue.

  4. Aquia Creek sandstone - Wikipedia

    en.wikipedia.org/wiki/Aquia_Creek_sandstone

    Quarried at Aquia Creek in Stafford County, Virginia, the stone was valuable for its ease of shaping and the quarry's proximity to the tidewater portion of the Potomac River, 45 miles (72 km) south of Washington. The sandstone was the principal material used in such significant buildings as the White House and the early stages of the U.S ...

  5. Sandstone - Wikipedia

    en.wikipedia.org/wiki/Sandstone

    Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains, cemented together by another mineral. Sandstones comprise about 20–25% of all sedimentary rocks.

  6. Gemstone Meanings: Power and Significance of the 25 Most ...

    www.aol.com/gemstone-meanings-power-significance...

    Citrine “A powerful gemstone crystal in a range of deep yellows, oranges, and yellow-cream-white, the citrine gemstone is said to bring abundance and wealth into one’s life,” Salzer says.

  7. Medina sandstone - Wikipedia

    en.wikipedia.org/wiki/Medina_sandstone

    Medina sandstone is a geographic subset of the Medina Group stratigraphic formation in New York State and beyond. The name refers specifically to sandstone first quarried in Medina, New York, and later quarried in other locations in Orleans County and adjacent quarries in Monroe County to the east and Niagara County to the west.

  8. The Calderstones - Wikipedia

    en.wikipedia.org/wiki/The_Calderstones

    The stones are housed in the Harthill Greenhouses in Calderstones Park, having been moved from their previous location in an enclosure just outside the park gates in 1954 to protect them from further weathering. [4] Nearby Robin Hood's Stone was originally one of the Calderstones, and has been relocated. [5]

  9. The Secret Birthstone Meanings Behind Your Stone - AOL

    www.aol.com/entertainment/secret-birthstone...

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