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Presenting very rare 2.20 carats hackmanite from Afghanistan

139
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存貨單位
Hackb3
尺寸(毫米)
12.200 x 7.300 x 4.400mm
重量 (cts)
2.200
Treatment
No Treatment
Shape
Pear
類型
Cabochon
Clarity
SI
顏色

Hackmanite is a rare, semi-precious mineral with a number of unique properties:

Color

Hackmanite is typically pink to violet in color, but can also be white, blue, gray, or purple. When exposed to sunlight or UV light, it can temporarily change color to gray or greenish-white. This is known as tenebrescence, or reversible photochromism, and is the rarest optical phenomenon in gemstones.

Formation

Hackmanite is usually formed in alkaline magmas with low silica, such as nepheline syenites, phonolites, and metasomatized calcareous rocks.


Discovery

Hackmanite was discovered in Greenland in the late 1890s and named after Finnish geologist Victor Hackman.

Uses

Hackmanite is used in jewelry and as an energy crystal, but it also has potential for high-tech applications. For example, researchers at the University of Turku are developing hackmanite plates to measure radiation levels on the International Space Station.

Other names

Hackmanite is a variety of sodalite, a sodium aluminosilicate containing chloride. The International Mineralogical Association no longer considers hackmanite an official mineral name, so some say that photochromic or tenebrescent sodalite would be a more appropriate name.





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送貨細節

船運:
$10.00 21透過Standard Shipping - Tracked計算天數
發貨自:
Thailand

付款方式

  • stripe
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  • gempay
該賣家在Thailand交易中加入了7.00%稅。

概述

列表類型 : Standard
產品編號 : 2604500
開始 : 3rd November 2024 08:22 am PST
* 所有價格均以:貨幣為單位