340.00 CTS COPPER SPLASH SPECIMEN [MGW2906]

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Dimensions (mm) not provided
Weight (carats) not provided
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Certified Gemstone

MINERAL GEM WORLD

COPPER SPLASH

This is a piece of cooper that has ben heated and then splashed on a dish to cool leaving amazing shapes.When the shapes are cooled, a green or turquoise-colored chemical patina is applied using a copper Carbonate, then highlights are buff polished to expose the solid copper raised areas. The finished sculptures are finally sprayed with a clear acrylic finish to prevent the copper from tarnishing. Interesting collectors item.

Weight 340.00 cts app

Size 100 x 65 x 11 mm app

Copper, as native copper, is one of the few metals to naturally occur as an un-compounded mineral. Copper was known to some of the oldest civilizations on record, and has a history of use that is at least 10,000 years old. Some estimates of copper's discovery place this event around 9000 BC in the Middle East .A copper pendant was found in what is now northern Iraq that dates to 8700 BC. Color

Copper has a reddish, orangish, or brownish color because a thin layer of tarnish(including oxides) gradually forms on its surface when gases (especially oxygen) in the air react with it. But pure copper, when fresh, is actually a pinkish or peachy metal. Copper, caesium and gold are the only three elemental metals with a natural color other than gray or silver. The usual gray color of metals depends on their "electron sea" that is capable of absorbing and re-emitting photons over a wide range of frequencies. Copper is a metal that does not react with water , but the oxygen of the air will react slowly at room temperature to form a layer of brown-black copper oxide on copper metal.

$34.00 USD

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Pricing & Details

Auction ID 321052
Watchers 8 watching
Viewed 1,375 times
Starts 6th Dec 2012 2:23pm PST

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