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Pristine Natural Commodities

Formula 10,hargaisa,Shacab District,Somalia

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High quality Opal Stones

Somalia

High quality opal stones & Precious stones

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100

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14

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macdan

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Product Description

Product Description: 

Opal is a hydrated amorphous form of silica (SiO2路nH2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classed as minerals. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl, and basalt.

There are two broad classes of opal: precious and common. Precious opal displays play-of-color (iridescence), common opal does not. Play-of-color is defined as "a pseudo chromatic optical effect resulting in flashes of colored light from certain minerals, as they are turned in white light. The internal structure of precious

opal causes it to diffract light, resulting in play-of-color. Depending on the conditions in which it formed, opal may be transparent, translucent, or opaque and the background color may be white, black, or nearly any color of the visual spectrum. Black opal is considered to be the rarest, whereas white, gray, and green are the most common.

Contact Us

Contact Person :Mr. Dr. Mark

Company:Pristine Natural Commodities

Address:Formula 10, hargaisa, Shacab District, Somalia,252

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Mr. Dr. Mark < Pristine Natural Commodities >
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