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  1. Formula (repeating unit)Silica (silicon dioxide, SiO₂)
    Crystal systemTrigonal
    Crystal classTrapezohedral (32)
    Structure

    Amethyst is a purple variety of quartz (SiO 2) and owes its violet color to irradiation, impurities of iron (Fe ) and in some cases other transition metals, and the presence of other trace elements, which result in complex cr… See more

    Hue and tone

    Amethyst occurs in primary hues from a light lavender or pale violet to a deep purple. Amethyst may exhibit one or both secondary hues, red and blue. High-quality amethyst can be found in Siberia, Sri Lanka, BrazilSee more

    Geographic distribution

    Amethyst is found in many locations around the world. Between 2000 and 2010, the greatest production was from Marabá and Pau d'Arco, Pará, and the Paraná Basin, Rio Grande do Sul, Brazil; Sandoval, Santa Cruz, BoliviaSee more

    History

    Amethyst was used as a gemstone by the ancient Egyptians and was largely employed in antiquity for intaglio engraved gems.
    The ancient Greeks believed amethyst gems could preve… See more

     
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  2. Amethyst - Simple English Wikipedia, the free encyclopedia

     
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  5. Amethyst Crystal: Meaning & Properties – What Does Amethyst Do?

  6. Amethyst | Properties, Formation, Gemstone » …

    Apr 23, 2023 · Learn about amethyst, a purple variety of quartz, and its formation, physical, optical and chemical properties. Discover the geological significance of amethyst and its mining and processing methods.

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  8. Amethyst Crystals – Meaning & Properties of the …

    Amethyst crystals are one of the world’s most popular gemstones and have been in use for thousands of years. The believed healing properties of the stone are rather impressive and trace back to ancient Greek beliefs.

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  9. All About Amethyst – Uses, Properties, Color, and Worth

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