$36.00 USD
Prijs
5987
16

28.7 CTS DIOPTASE SPECIMEN-EMERALD GREEN [ST8431]

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 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

Verzend provider Verzending naar:land Verzending naar de rest van de wereld
FedEx $12.00 / :dagen dagen $39.00 / :dagen dagen
:land
FedEx wordt verdisconteerd tot $12.00 bij bestellingen met 2 of meer artikelen
Rest van de wereld
FedEx wordt verdisconteerd tot $39.00 bij bestellingen met 2 of meer artikelen
Registered Shipping $9.00 / :dagen dagen $16.00 / :dagen dagen
:land
Registered Shipping wordt verdisconteerd tot $9.00 bij bestellingen met 2 of meer artikelen
Rest van de wereld
Registered Shipping wordt verdisconteerd tot $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.
:stad land
Geverifieerd
19025e feedback

  • royrock
    royrock
    Positief

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

15%
Coupon code BLACKFRIDAY24
Geldig tot
3rd Dec 2024

Audit

Dit product is gecontroleerd door een Gemstone Sheriff en zij hebben het volgende gevonden:
  • Beschrijving Nauwkeurig
  • Foto's Nauwkeurig

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.

Deze audit is aangevraagd :datum
Laatst bijgewerkt: datum

Verzendgegevens

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

Betalingsmogelijkheden

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

Overzicht

Vermeldingstype : Standard
Product-ID : 419580
Begint : 20th November 2024 10:00 pm PST
* Alle prijzen zijn in:valuta