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NATURAL CRYSTAL WITH INCLUSIONS TERMINATED52.80 CTS [MX9205]

2987
2

SKU
寸法(mm)
x x mm
重さ (CT)

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 52.80 cts app

Size 51 x 13 x 10 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.
  • 配送業者 配送先Australia その他の国への配送
    FedEx $12.00 / 3 $39.00 / 10
    :国
    FedEx 、 2以上のアイテムを含む注文で$12.00に割引されます
    世界のその他の地域
    FedEx 、 2以上のアイテムを含む注文で$39.00に割引されます
    Registered Shipping $9.00 / 7 $16.00 / 21
    :国
    Registered Shipping 、 2以上のアイテムを含む注文で$9.00に割引されます
    世界のその他の地域
    Registered Shipping 、 2以上のアイテムを含む注文で$16.00に割引されます

    sedagems
    sedagems
    Hi Welcome to the Sedagems store, Run by Paul Sedawie and specializing in Australian sapphires and gems stones he has collected on his many buying trips world wide. All stock has a money back guarantee as your continued business is our business.
    Mermaid Waters 、 Australia
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    • rustynut
      rustynut
      ポジティブ

      Good stone great service

    • martin11
      martin11
      ポジティブ

      Great thank very much, lovely pearls.

    • philsgems
      philsgems
      ポジティブ

      Nice piece of rough. thankyou

    • philsgems
      philsgems
      ポジティブ

      Nice stone. Thankyou

    • philsgems
      philsgems
      ポジティブ

      Have received the rough. Nice colour. Thankyou

    5%
    クーポンコード SEDADEALS
    まで有効
    2nd Jan 2025

    監査

    Gemstone Sheriffプログラムでは、メンバーがあらゆる製品の監査をリクエストできます。監査は独立したGemologistによって完了され、アイテムの説明と写真の正確さが評価されます。

    発送詳細

    配送:
    $16.00 21日 ( Registered Shipping経由)
    発送元:
    Australia

    支払いオプション

    • paypal
    • stripe
    この販売者は、 Australiaでの取引に10.00%税金を追加します。

    概要

    リストタイプ : Standard
    製品番号 : 229267
    始まります : 18th December 2024 07:00 pm PST
    * すべての価格はUSDで表記されています