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$32.00 USD
價格

49.5 CTS DIOPTASE SPECIMEN-EMERALD GREEN [ST8429]

4354
9

存貨單位
尺寸(毫米)
x x mm
重量 (cts)
Certified Gemstones
Shape
Emerald
顏色

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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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
    積極的

    Good stone great service

  • martin11
    martin11
    積極的

    Great thank very much, lovely pearls.

  • philsgems
    philsgems
    積極的

    Nice piece of rough. thankyou

  • philsgems
    philsgems
    積極的

    Nice stone. Thankyou

  • philsgems
    philsgems
    積極的

    Have received the rough. Nice colour. Thankyou

5%
優惠券代碼 SEDADEALS
有效期至
2nd Jan 2025

審計

Gemstone Sheriff計畫允許我們的會員要求對任何產品進行審核,該審核由獨立的Gemologist人員完成,該資格人員評估商品描述和圖片的準確性。

送貨細節

船運:
$16.00 21透過Registered Shipping計算天數
發貨自:
Australia

付款方式

  • paypal
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該賣家在Australia交易中加入了10.00%稅。

概述

列表類型 : Standard
產品編號 : 419583
開始 : 19th December 2024 10:00 pm PST
* 所有價格均以:貨幣為單位