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$11.00 USD
价格

AZURITE +MALACHITE SPECIMEN FROM MOROCCO 15.20CTS [MX 6227]

6368
5

存货单位
尺寸(毫米)
x x mm
重量 (cts)
Certified Gemstones
类型
Rough
颜色

AZURITE MALACHITE SPECIMEN

This is a specimen showing the strong blue colours  azurite with the green of malachite.Ideal collectors specimen.

Weight  15.20 cts

Size 19 x 14 x 9 mm app

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.

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FedEx折扣至$39.00 ,适用于包含2或更多商品的订单
Registered Shipping $9.00 / :几天天 $16.00 / :几天天
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Registered Shipping折扣至$9.00 ,适用于包含2或更多商品的订单
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Registered Shipping折扣至$16.00 ,适用于包含2或更多商品的订单

sedagems
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.
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  • rustynut
    rustynut
    积极的

    Good stone great service

  • martin11
    martin11
    积极的

    Great thank very much, lovely pearls.

  • philsgems
    philsgems
    积极的

    Nice piece of rough. thankyou

  • philsgems
    philsgems
    积极的

    Nice stone. Thankyou

  • philsgems
    philsgems
    积极的

    Have received the rough. Nice colour. Thankyou

5%
优惠券代码 SEDADEALS
有效期至
2nd Jan 2025

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$16.00 21通过Registered Shipping计数天数
发货自:
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概述

列表类型 : Standard
产品编号 : 170481
开始 : 21st December 2024 12:00 am PST
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