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  1. Wikipedia
    https://en.wikipedia.org/wiki/Turquoise

    Turquoise - Wikipedia

    • Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula CuAl6(PO4)4(OH)8·4H2O. It is rare and valuable in finer grades and has been prized as a gemstone for millennia due to its hue. Like most other opaque gems, turquoise has been devalued by the introduction of treatments, imitati… See more

    Names

    The word turquoise dates to the 17th century and is derived from the Old French turquois meaning "Turkish" because the … See more

    Properties

    The finest of turquoise reaches a maximum Mohs hardness of just under 6, or slightly more than window glass. Characteristically a cryptocrystalline mineral, turquoise almost never forms single crystals, and all of its properties … See more

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    CategoryPhosphate minerals
    Formula (repeating unit)CuAl₆(PO₄)₄(OH)₈·4H₂O
    IMA symbolTqu
    Strunz classification8.DD.15
    Formation

    Turquoise deposits probably form in more than one way. However, a typical turquoise deposit begins with hydrothermal deposition of copper sulfides. This takes place when hydrothermal fluids leach copper from a host rock, … See more

    Occurrence

    Turquoise was among the first gems to be mined, and many historic sites have been depleted, though some are still worked to this day. These are all small-scale operations, often seasonal owing to the limited sco… See more

    History of use

    The pastel shades of turquoise have endeared it to many great cultures of antiquity: it has adorned the rulers of Ancient Egypt, the Aztecs (and possibly other Pre-Columbian Mesoamericans), Persia… See more

    Cultural associations

    In many cultures of the Old and New Worlds, this gemstone has been esteemed for thousands of years as a holy stone, a bringer of good fortune or a talisman. The oldest evidence for this claim was found in Ancient Egypt, … See more

    Imitations

    The Egyptians were the first to produce an artificial imitation of turquoise, in the glazed earthenware product faience. Later glass and enamel were also used, and in modern times more sophisticated porcelain, plastics, and variou… See more

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    Formation
    Occurrence
    History of use
    Cultural associations
     

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  2. Geology.com
    https://geology.com/minerals/turquoise.shtml

    Turquoise as a Mineral and Gemstone | Uses and Properties

     

  3. Images of Turquoise

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  4. Rock Chasing
    https://rockchasing.com/types-of-turquoise

    24 Different Types Of Turquoise And What They All Look Like

  5. Authority Jewelry
    https://authorityjewelry.com/turquoise

    Turquoise – The Ultimate Guide – (Meaning, Description, Uses

  6. Interesting reads - Turquoise

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  7. Gemological Institute of America (GIA)
    https://www.gia.edu/turquoise

    Turquoise Gemstone | Turquoise Stone - GIA

    Turquoise is an opaque colored stone that can be marketed both as a gem for jewelry & is found in only dry & barren regions on earth.

  8. Britannica
    https://www.britannica.com/science/tur…

    Turquoise | Semi-precious stone, Copper-Aluminum, …

    turquoise, hydrated copper and aluminum phosphate [CuAl 6 (PO 4) 4 (OH) 8 ·4H 2 O] that is extensively used as a gemstone. It is a secondary mineral deposited from circulating waters, and it occurs chiefly in arid environments as blue to …

  10. Gemological Institute of America (GIA)
    https://www.gia.edu/turquoise-history-l…

    Turquoise History and Lore - GIA

    Learn about the ancient origins, cultural significance, and modern uses of turquoise, a blue-green gemstone. Discover its meaning, symbolism, and popularity in jewelry and art.

  11. Gemological Institute of America (GIA)
    https://www.gia.edu/turquoise-description

    Turquoise Description - GIA

    Learn about the formation, history, and characteristics of turquoise, a popular gemstone with a range of colors and textures. Find out how turquoise is valued, treated, and used in jewelry and art.

  12. International Gem Society
    https://www.gemsociety.org/.../how-do …

    How Do Turquoises Form? - International Gem Society

    What is Turquoise? Unlike popular transparent gemstones like diamond and aquamarine, gem-quality turquoise doesn’t form as a single solid crystal. Instead, turquoise is a porous mineral aggregate known as a cryptocrystalline rock, …

  13. Gem Rock Auctions
    https://www.gemrockauctions.com/.../t…

    Turquoise Stone: Benefits, Meanings, Properties

    Jul 8, 2021 · Turquoise stones are blue and green phosphate minerals celebrated for their soothing energy and oceanic beauty. Learn about turquoise and shop for loose stones at Gem Rock Auctions.

  14. Crystal Vaults
    https://www.crystalvaults.com/.../turquo…

    Turquoise Meanings and Uses - Crystal Vaults

    Learn about the history, properties and benefits of Turquoise, a stone of protection, wisdom and immortality. Find out how to use Turquoise for healing, communication, travel, fidelity and more.

  15. thecrystalalmanac.com
    https://thecrystalalmanac.com/turquoise

    Turquoise Meaning, Healing Properties, and Uses - The Crystal …

  16. CrystalsandJewelry.com
    https://meanings.crystalsandjewelry.com/TURQUOISE

    Turquoise Stone: Meanings, Properties, and Powers

  17. Yelp
    https://www.yelp.com/search?find_desc=turquoise...

    TOP 10 BEST Turquoise Jewelry Stores in Saint Louis, MO - Yelp

  18. Yelp
    https://www.yelp.com/search?find_desc=turquoise...

    Top 10 Best Turquoise Jewelry in Saint Louis, MO - Yelp

  19. Gemological Institute of America (GIA)
    https://www.gia.edu/turquoise-quality-factor

    Turquoise Quality Factors | Different Types & Colors of Turquoise …

  20. Yelp
    https://www.yelp.com/search?find_desc=Turquoise...

    TOP 10 BEST Turquoise Jewelry in St. Louis, MO - Yelp

  21. Turquoise Tuesday
    https://www.turquoisetuesday.com

    TURQUOISE TUESDAY - REAL Turquoise Jewelry

  22. The Silver Lady
    https://www.thesilver-lady.com

    Home - The Silver Lady

  23. Crystal Digest
    https://www.crystaldigest.com/crystals/turquoise

    Turquoise Meaning, Uses, and Benefits - Metaphysical Properties

  24. Wikipedia
    https://en.wikipedia.org/wiki/HMS_Turquoise_(1876)

    HMS Turquoise (1876) - Wikipedia

  25. Etsy
    https://www.etsy.com/listing/1832268487

    Handmade Turquoise Choker / Turquoise Necklace / Natural