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382 CTS MOROCCAN AZURITE -MALACHITE SPECIMEN RT 2038

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AZURITE/MALACHITE  SPECIMEN

This is a specimen showing the strong blue colours this is mineral is known for.Ideal collectors specimen.



Size62 x37x 28   mm

Malachite and Azurite are both simple Copper carbonates. Azurite occurs as a secondary mineral in the oxidized zones of copper deposits. Where as Malachite occurs as an alteration product in the oxidized zones of copper deposits.

They are chemical twins. The only differences is that Azurite holds less water than Malachite. The green patina on weathered copper roofs is a form of Malachite. Both Malachite and Azurite are formed when carbon dioxide and water, weather copper ore or when copper ore weathers the mineral calcite. Azurite is found in shades of deep blue and is much more rare
then Malachite.

Azurite and Malachite are very often found together. Blue bladed azurite crystals blending
with the rich green of malachite is a very pleasing mineral combination. A rarer Azurite
mixture, known as "Bluebird", is Azurite mixed with dark red Cuprite

Azurite is a soft, deep blue copper mineral produced by weathering of copper ore deposits. It is also known as Chessylite after the Chessy-les-Mines near Lyon, France, where striking specimens have been found. The mineral has been known since ancient times. The blue of azurite is exceptionally deep and clear, and for that reason the mineral has tended to be associated since antiquity with the deep blue color of low-humidity desert and winter skies. 

Pigments

Azurite was used as a blue pigmentfor centuries. Depending on the degree of fineness to which it was ground, and its basic content of copper carbonate, it gave a wide range of blues. It has been known as mountain blue or Armenian stone, in addition it was formerly known as Azurro Della Magna (from Italian). When mixed with oil it turns slightly green. When mixed with egg yolk it turns green-grey. It is also known by the names Blue Bice and Blue Verditer. Older examples of azurite pigment may show a more greenish tint due to weathering into malachite. Much azurite was mislabeled lapis lazuli, a term applied to many blue pigments. As chemical analysis of paintings from the Middle Agesimproves, azurite is being recognized as a major source of the blues used by medieval painters. True lapis lazuli was chiefly supplied from Afghanistan during the Middle Ages while azurite was a common mineral in Europe at the time.

 

Collecting

The intense color of azurite makes it popular collector's stone. However, bright light, heat, and open air all tend to reduce the intensity of its color over time. To help preserve the deep blue color of a pristine azurite specimen, collectors should use a cool, dark, sealed storage environment similar to that of its original natural setting.

Shipping provider Shipping to Australia Shipping to rest of world
FedEx $12.00 / 3 days $39.00 / 10 days
Australia
FedEx is discounted to $12.00 on orders with 2 or more items
Rest of the world
FedEx is discounted to $39.00 on orders with 2 or more items
Registered Shipping $9.00 / 7 days $16.00 / 21 days
Australia
Registered Shipping is discounted to $9.00 on orders with 2 or more items
Rest of the world
Registered Shipping is discounted to $16.00 on orders with 2 or more items

gem traders
gem traders
Gem Traders has an established market in Australia for gemstones and we added opals to compliment this range trading a sopalplus. Our main gemstones besides boulder opals and doublets are Rubies, Sapphires, Amethyst, Chrysoprase, Garnets and carved gemstones.
Qld, Australia
Verified
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  • hayley0482
    hayley0482
    Positive

    Great opals,fast shipping. Was a mix up on delivered items but seller sorted .

  • hayley0482
    hayley0482
    Positive

    Great opals,fast shipping. Was a mix up on delivered items but seller sorted .

  • hayley0482
    hayley0482
    Positive

    Great opals,fast shipping. Was a mix up on delivered items but seller sorted .

Bids History (1)
salmano
Purchased from this seller previously
3 years ago
$27.00

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Shipping Details

Shipping:
$16.00 21 days via Registered Shipping
Ships from:
Australia

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This seller adds 10.00% tax to transactions in Australia.

Overview

Listing Type : Standard
Product ID : 275796
Starting Bid : $29
Starts : 16th June 2020 04:30 pm AEST
Ends : 17th June 2020 02:30 pm AEST
* All prices are in USD