$44.00 USD

Prezzo

$44.00 USD

Prezzo

sedagems

3448

NATURAL CRYSTAL WITH INCLUSIONS TERMINATED48.50 CTS [MX9208]

3448

SKU
Dimensioni (mm): x x mm
Peso (cts)
Colori

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 48.50 cts app

Size 37 x 13 x 13 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.

SKU
Dimensioni (mm): x x mm
Peso (cts)
Colori

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 48.50 cts app

Size 37 x 13 x 13 mm app

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

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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.

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kewpie
on 11 Nov, 2024

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121 CTS MADAGASCAR AMMONITE FOSSIL -GREAT IRREDIESENCE COLOUR!

royrock
on 3 Nov, 2024

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Beautiful agate piece , and as always fast efficient service from Sedagems

17 CTS FIRE AGATE ROUGH

frank1942
on 2 Nov, 2024

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Nice

FIREY OPAL SILVER EARRINGS -RHODIUM PLATED

maiziemaizie
on 31 Oct, 2024

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Gorgeous stones, very happy

71 CTS FIRE AGATE ROUGH PARCEL

maiziemaizie
on 31 Oct, 2024

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Gorgeous stone, very happy

22.9CTS VARASCITE 'SPIDER WEB' AUSTRALIA [MGW 4616]

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