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28.7 CTS DIOPTASE SPECIMEN-EMERALD GREEN [ST8431]

6053
17

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 28.7 cts app

Size 20 X 17 X 15 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

Versandanbieter Versand nach Australia Versand in den Rest der Welt
FedEx $12.00 / 3 $39.00 / 10
Australia
FedEx erhält Rabatt auf $12.00 bei Bestellungen mit 2 oder mehr Artikeln
Rest der Welt
FedEx erhält Rabatt auf $39.00 bei Bestellungen mit 2 oder mehr Artikeln
Registered Shipping $9.00 / 7 $16.00 / 21
Australia
Registered Shipping erhält Rabatt auf $9.00 bei Bestellungen mit 2 oder mehr Artikeln
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
19054 Feedback

  • 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

  • ryumaru
    ryumaru
    Positiv

    Beautiful ametrine. Very fast delivery. Professional seller

5%
Gutscheincode SEDADEALS
Gültig bis
2nd Jan 2025

Prüfung

Dieses Produkt wurde von Gemstone Sheriff geprüft und es wurde Folgendes festgestellt:
  • Beschreibung Präzise
  • Bilder genau

Comments

The Verified Seller responsible for this item has diligently provided us with accurate and comprehensive information, encompassing crucial details such as weight, dimensions, and treatment. It is important to reiterate our commitment to upholding the highest standards of integrity and transparency in the gemstone industry. As part of our policy, we strictly permit the sale of exclusively natural gemstones that have been sourced directly from the Earth. However, in the event that a gemstone has undergone any form of treatment, it is mandatory for the seller to provide full disclosure regarding the treatment process. Furthermore, we would like to emphasize that man-made gemstones, including simulants and imitations, are strictly prohibited on our platform. We prioritize the promotion of authentic, natural gemstones to ensure a genuine and trustworthy marketplace for our valued customers. Should you have any further inquiries or require additional assistance, please do not hesitate to reach out. We are here to assist you and provide a seamless experience on Gem Rock Auctions.

Dieses Audit wurde angefordert vor 1 Jahr
Zuletzt aktualisiert vor 1 Jahr

Versanddetails

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

Zahlungsmöglichkeiten

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

Überblick

Auflistungstyp : Standard
Produkt ID : 419580
Beginnt : 18th December 2024 10:00 pm PST
* Alle Preise sind in USD