Jasper
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Jasper is a form of microcrystaline quartz, silicon dioxide. It is an opaque mineral prized by mineral enthusists because it can be almost any color and can take a high polish. The colors of jasper are imparted by traces of other minerals. There are many kinds of jasper, red is perhalps the most common. Other types include polychrome, ocean, and bloodstone.
Often confused with chert and flint with good reason because they are chemically identical. The difference between the use of names is mostly dependant on who is talking. A geologist it is chert, hile an archeologist refers to this stone as flint.
