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NATURAL CRYSTAL WITH INCLUSIONS TERMINATED70.60 CTS [MX9191]

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MINERAL GEM WORLD

CRYSTAL WITH INCLUSIONS

This is a natural untreated crystal from Brazil showing great terminations with a fiborous inclusion in the base-great specimen.

Weight 70.60 cts app

Size 46 x 18 x 11 mm app

Quartz grows in many environments along with many different minerals. These minerals, as well as watery solutions and gas bubbles, can be enclosed by the growing crystal.
Many minerals that would otherwise be chemically altered or dissolved when the local conditions change are protected from aggressive chemical agents when they have been embedded inside quartz crystals. Likewise, fragile minerals that are very soft, crumbly or that occur as fibers or thin needles survive inside. Other partially embedded minerals might get dissolved at a later stage and leave ghostlike hollow forms behind.

There are basically three ways inclusions can "get into the crystal":

  • The minerals have formed before the quartz. The growing quartz crystals engulfs them and the original form of the included minerals is preserved. These inclusions are called protogenetic. Included fibers than run through the entire crystal at random orientations are typical examples.
  • Quartz crystals and the included minerals grow simultaneously. These inclusions are called syngenetic. The shape of the included minerals often deviates from the typical forms and habits that develop during unhindered growth. Crystals may be distorted beyond recognition and a non-destructive identification may pose a real problem even for a mineralogist.
    Sometimes inclusions cause the formation of phantoms. Here the quartz crystal might have been partially encrusted by another mineral when growth halted transiently and continued later, such a case could be considered a syngenetical formation that got overgrown.
  • Minerals can get into another mineral by exsolution. When the conditions during crystal growth allowed the incorporation of elements into the crystal lattice that are incompatible with the crystal structure at different temperatures or pressures, these elements may separate from the lattice to form new minerals once the conditions change. Such inclusions are called epigenetic. Very often these inclusions are specifically oriented with respect to the crystallographic axes of the main crystal. The best example of a quartz with epigenetic inclusions is rose quartz.
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    NATURAL CRYSTAL WITH INCLUSIONS TERMINATED70.60 CTS [MX9191]
    Qld, Australia
    Propiedad de sedagems
    Comentarios recientes
    • hotdogs4life
      hotdogs4life
      Positivo

      Everything was Awesome! Thank you so much for everything! It's always an absolute pleasure buying from you, and will be doing it again soon. Take care and all the best for the new year!

    • ir888
      ir888
      Positivo

      The Pendant is fantastic!

    • hotdogs4life
      hotdogs4life
      Positivo

      Absolutely smashing books, the opals are magnificent! Thank you so much for everything, will be buying from you again soon. Thank you, again!

    • ir888
      ir888
      Positivo

      The Pendant is breathtaking! Thanks!

    • ir888
      ir888
      Positivo

      The Pendant is stunning!

    Auditoría

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    Detalles de envío

    Costos:
    Tránsito:
    21 días a través de Registered Shipping
    Se envía desde:
    Australia

    Opciones de pago

    • paypal
    • stripe
    Este vendedor agrega 10.00% a las transacciones en Australia .

    Descripción general

    Tipo de listado : Standard
    ID del Producto : 229253
    Empieza : 3rd December 2025 07:00 pm PST
    * Todos los precios están en USD

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