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49.5 CTS DIOPTASE SPECIMEN-EMERALD GREEN [ST8429]

4353
9

SKU
Afmetingen (mm)
x x mm
Gewicht (cts)
Certified Gemstones
Nee
Shape
Emerald
Kleuren

SEDA GEMS

RARE DIOPTASE

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

Great specimen.

Weight 49.5  cts app

Size 33 X 26 X 12 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

Verzend provider Verzending naar Australia Verzending naar de rest van de wereld
FedEx $12.00 / 3 $39.00 / 10
Australia
FedEx krijgt korting op $12.00 bij bestellingen met 2 of meer artikelen
Rest van de wereld
FedEx krijgt korting op $39.00 bij bestellingen met 2 of meer artikelen
Registered Shipping $9.00 / 7 $16.00 / 21
Australia
Registered Shipping krijgt korting op $9.00 bij bestellingen met 2 of meer artikelen
Rest van de wereld
Registered Shipping krijgt korting op $16.00 bij bestellingen met 2 of meer artikelen

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
Geverifieerd
19061 feedback

  • rustynut
    rustynut
    Positief

    Good stone great service

  • martin11
    martin11
    Positief

    Great thank very much, lovely pearls.

  • philsgems
    philsgems
    Positief

    Nice piece of rough. thankyou

  • philsgems
    philsgems
    Positief

    Nice stone. Thankyou

  • philsgems
    philsgems
    Positief

    Have received the rough. Nice colour. Thankyou

5%
Coupon code SEDADEALS
Geldig tot
2nd Jan 2025

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Verzendgegevens

Verzenden:
$16.00 21 dagen via Registered Shipping
Schepen van:
Australia

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Deze verkoper voegt 10.00% belasting toe aan transacties in Australia .

Overzicht

Vermeldingstype : Standard
Product-ID : 419583
Begint : 19th December 2024 10:00 pm PST
* Alle prijzen zijn in USD