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$32.00 USD
价格

49.5 CTS DIOPTASE SPECIMEN-EMERALD GREEN [ST8429]

4356
9

存货单位
尺寸(毫米)
x x mm
重量 (cts)
Certified Gemstones
Shape
Emerald
颜色

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

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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
:国家
Registered Shipping折扣至$9.00 ,适用于包含2或更多商品的订单
世界其他地区
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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送货细节

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$16.00 21通过Registered Shipping计数天数
发货自:
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该卖家在Australia交易中添加了10.00%税。

概述

列表类型 : Standard
产品编号 : 419583
开始 : 19th December 2024 10:00 pm PST
* 所有价格均以:货币为单位