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NATURAL CRYSTAL WITH INCLUSIONSTERMINATED 59.90 CTS [MX9197]

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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 59.90 cts app

Size 49 x 14 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 INCLUSIONSTERMINATED 59.90 CTS [MX9197]

    sedagems
    Qld, Australia
    Owned by sedagems
    Verified
    View all 20,015 Feedback
    Recent Feedback
    • tjnewell
      tjnewell
      Positive

      Received item quickly and nicely packaged happy with the eir service

    10.84 CTS MOLDIVATE NATURAL-GREEN-UNTOUCHED 10.84 CTS MOLDIVATE NATURAL-GREEN-UNTOUCHED
    • akkil2
      akkil2
      Positive

      Super quick delivery and a beautiful stone! :)

    0.518 CTS VIVID VS PARTI SAPPHIRE -AUSTRALIA 0.518 CTS VIVID VS PARTI SAPPHIRE -AUSTRALIA
    • gunner8
      gunner8
      Positive

      Beautiful azurite mineral specimen

    640.45 CTS AZURITE 'SUN' SPECIMEN ON KAOLINITE -AUSTRALIA- [STS797] 640.45 CTS AZURITE 'SUN' SPECIMEN ON KAOLINITE -AUSTRALIA- [STS797]
    3 CTS AUSTRALIAN PINK SAPPHIRE PARCEL [ST9147] 3 CTS AUSTRALIAN PINK SAPPHIRE PARCEL [ST9147]
    purplish saphire that fluorences bright purple red purplish saphire that fluorences bright purple red
    View All Feedback

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    Overview

    Listing Type : Standard
    Product ID : 229259
    Starts : 29th March 2026 08:00 pm PDT
    * All prices are in USD

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