LARGE BIRDS EYE JASPER [MEXICO] PENDANT 105.80 CTS [GT977 ]

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LARGE BIRDS EYE JASPER PENDANT

This is a unusual and rare jasper from mexico.We have polished both sides and wire wrapped with rhodium plated base metal for a long wearing life.

Weight 105.80 cts app

size 49 x 8 x 36 mm app

Jasper is an opaque rock of virtually any color stemming from the mineral content of the original sediments or ash. Patterns arise during the consolidation process forming flow and depositional patterns in the original silica rich sediment or volcanic ash. Hydrothermal circulation is generally thought to be required in the formation of jasper.

Jasper can be modified by the diffusion of minerals along discontinuities providing the appearance of vegetative growth, i.e., dendritic. The original materials are often fractured and/or distorted, after deposition, into myriad beautiful patterns which are to be later filled with other colorful minerals. Weathering, with time, will create intensely colored superficial rinds.

The classification and naming of jasper presents an enormous challenge. Terms attributed to various well-defined materials includes the geographic locality where it is found, sometimes quite restricted such as "Bruneau" (a canyon) and "Lahontan" (a lake), rivers and even individual mountains, many are fanciful such as "Forest Fire" or "Rainbow", while others are descriptive such as "Autumn", "Porcelain" or "Dalmatian". A few are designated by the country of origin such as a Brown Egyptian or Red African leaving tremendous latitude as to what is called what.

 

$18.00 USD

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Auction ID 567073
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Starts 1st Jan 2014 11:11pm PST

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