Jasper, an aggregate of microgranular quartz and/or chalcedony and other mineral phases, is an opaque,impure variety of silica, usually red, yellow, brown or green in color; and rarely blue. The common red color is due to ironIII inclusions. The mineral aggregate 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 snuff boxes. The specific gravity of jasper is typically 2.5 to 2.9.Along with heliotrope bloodstone, jasper green with red spots is one of the traditional birthstones for March. Jaspilite is a banded iron formation rock that often has distinctive bands of jasper.
圖片編號:
110823943
拍攝者:
Mohaeljawphoto
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XS
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XL
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標準授權 | 480 x 461 px | JPG | 13 點 |
標準授權 | 800 x 768 px | JPG | 15 點 |
標準授權 | 1768 x 1696 px | JPG | 18 點 |
標準授權 | 2282 x 2190 px | JPG | 20 點 |
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進階授權 | 4000 x 3838 px | JPG | 88 點 |
進階授權 | 4000 x 3838 px | JPG | 88 點 |
進階授權 | 4000 x 3838 px | JPG | 88 點 |