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65.4 CTS DIOPTASE SPECIMEN-EMERALD GREEN [MST8421]

3810
5

Artikelnummer
Abmessungen (mm)
x x mm
Gewicht (cts)
Certified Gemstones
NEIN
Shape
Emerald
Farben

SEDA GEMS

RARE DIOPTASE

This is a natural untreated specimen of Dioptase on its natural matrix from Kazakhstan

Great specimen.

Weight 65.4 cts app

Size 29X25X17 mm app

Dioptase is an intense emerald-green to bluish-green copper cyclosilicate mineral. It is transparent to translucent. Its luster is vitreous to sub-adamantine.

Late in the 18th century, copper miners at the Altyn-Tyube (Altyn-Tube) mine, Karagandy Province,Kazakhstan thought they found an emerald deposit of their dreams. They found fantastic cavities in quartz veins in a limestone, filled with thousands of lustrous emerald-green transparent crystals. The crystals were dispatched to Moscow, Russia for analysis as they thought they were Emeralds.

Dioptase is a very rare mineral found mostly in desert regions where it forms as a secondary mineral in the oxidized zone of copper sulfide mineral deposits. However, the process of its formation is not simple, the oxidation of copper sulfides should be insufficient to crystallize dioptase as silica is normally minutely soluble in water except at highly alkaline pH. The oxidation of sulfides will generate highly acidic fluids rich in sulfuric acid that should suppress silica solubility. However, in dry climates and with enough time, especially in areas of a mineral deposit where acids are buffered by carbonate, minute quantities of silica may react with dissolved copper forming

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Rest der Welt
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Australia
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Rest der Welt
Registered Shipping erhält Rabatt auf $16.00 bei Bestellungen mit 2 oder mehr Artikeln

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
Verifiziert
19061 Feedback

  • rustynut
    rustynut
    Positiv

    Good stone great service

  • martin11
    martin11
    Positiv

    Great thank very much, lovely pearls.

  • philsgems
    philsgems
    Positiv

    Nice piece of rough. thankyou

  • philsgems
    philsgems
    Positiv

    Nice stone. Thankyou

  • philsgems
    philsgems
    Positiv

    Have received the rough. Nice colour. Thankyou

5%
Gutscheincode SEDADEALS
Gültig bis
2nd Jan 2025

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Versanddetails

Versand:
$16.00 21 über Registered Shipping
Schiffe von:
Australia

Zahlungsmöglichkeiten

  • paypal
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Dieser Verkäufer fügt den Transaktionen in Australia 10.00% tax hinzu.

Überblick

Auflistungstyp : Standard
Produkt ID : 419572
Beginnt : 20th December 2024 10:00 pm PST
* Alle Preise sind in USD