|Dimensions (mm)||not provided|
|Weight (carats)||not provided|
MINERAL GEM WORLD
PICTURE JASPER STONE.
This is a natural well polished stone from Utah USA
Weight 93.00 cts app
Size 40 x 36 x 8 mm app
Jasper, a form of chalcedony,is an opaque, impure variety of silica, usually red, yellow, brown or green in color. Blue is rare. This minerl breaks with a smooth surface, and is used for ornamentation or as a gemstone. It can be highly polished and is used for vases, seals, and at one time for snuff boxes. When the colors are in stripes or bands, it is called striped or banded jasper. Jaspilite is a banded iron formation rock that often has distinctive bands of jasper.Jasper is basically chert which owes its red color to iron inclusions
often contains organic material and mineral oxides which give it interesting patterns, bands and colors. Many of these patterns resemble landscapes with mountains and valleys, thus the name "picture" is part of the name of many well know jaspers.
Jasper was a favorite gem in ancient times and is referenced in Greek, Hebrew, Assyrian and Latin literature.
Found worldwide, a wide variety of named jaspers is found in the western areas of the Unites States; California, Oregon, Idaho, Utah, Wyoming and Washington.
Picture jasper is a petrified or silicated mud that dripped into gas pockets in molten lava. It became superheated and then solidified forming the unusual banded patterns which are typical of this stone.
|Starts||26th Apr 2017 7:02pm PDT|
|Ends||29th Apr 2017 7:00pm PDT|
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